What's New


Version 8    Release 6

Revision 7,  (Aug 2024)  (Public: Aug 08, 2024)

  • ---- Version 8.6.7 released. (Aug 08, 2024) ----
  • New program cutcpd to reduce the dimensionality of a cpd by fixing selected DOFs in a cpd file to reference values.
    (MS 02/24)
  • The routines adpop and adproj have been extended to enable the calculation of off-diagonal elements of the electronic density matrix. (The diagonal elements are the populations). For adpop this feature is restricted to two state cases.
    ((HDM 02/24)
  • minstall (on .mctdhrc) now can install a quantics directory as well.
    ((HDM 03/24)
  • flux now knows the option/keyword projonly. It then performs only the projection step. See also wfproj86. Note that the created file prjpsi contain the projected WF in case of MCTDH, but not in case of ML-MCTDH. In case of ML-MCTDH the SPFs of the projected modes are simply replaced with the overlap with the projecting function put to the first grid point. Hence these WFs cannot be propagated, but one may compute its norm, etc.
    ((HDM 03/24)
  • New option "nocap" implemented in flux. It computes
    flux(E) = <Psi(E)|P|Psi(E)>
    wtt(t) = <Psi(t)|P|Psi(t)>
    where P denotes a projector. Operators can be used as well. Running fux86 with the -nocap option and a projector, which projects onto an excited state of the DOF or mode under discussion, can be very helpful for assigning a peak in a spectrum.
    ((HDM 03/24)
  • plgpop, rdgpop86: Plotting of grid-populations of individual el-states is now possible, if gridpop=el was given in propagation.
    ((HDM 04/24)
  • The exp-DVR is no longer retricted to odd numbers of grid points, it may now use even numbers as well.
    ((HDM 05/24)
  • The projector 'read', used in flux and wfproj, is now easier to use. It is no longer requested that the full set of DVRs between system and foreign restart file are consistent, only the DVRs of the mode under consideration must be consistent. In the input one has now to additionally provide the mode number on the foreign file as the last integer before the end symbol %. See the HTML docu.
    ((HDM 07/24)
  • New program wfmount for modifying an initial ML-wavefunction. Wfmount mounts an (ML-)MCTDH wavefunction as a sub-tree into an existing ML-MCTDH wavefunction.
    (MS 07/24)

Revision 6,  (Feb 2024)  (Public: Feb 02, 2024)

  • ---- Version 8.6.6 released. (Feb 02, 2024) ----
  • New routine rdrestart86 implemented. It reads the info part of an restart file and prints most of it to screen. In particular it prints normthermal.
    Guide chaper 15 (thermalization) is updated.
    ((HDM 02/24)
  • New option override-initrank when reading initial cpd from file in mccpd. Some more symmetry checks in mccpd. Some bug-fixes for mccpd and mcpotfit when using MPI.
    (MS 01/24)
  • ACAP (automatic CAP) did not work properly for continuation runs, fixed.
    ((HDM 01/24)
  • The change of norm during a thermal relaxation is stored in normthermal and is written to log and restart file.
    ((HDM 12/23)
  • campactoper will simply transcribe PES or OPER files to cpd or hcpd format if the the output rank (-r option) is equal to the input rank.
    (MS 11/23)
  • Routines which handle ml-operators (ml-potfits) are no longer called when there are no ml-operators.
    ((HDM 11/23)
  • Fixed crash of propagation when using MPI.
    (MS 11/23)
  • New option for compactoper to start with a Hermitian or anti-Hermitian guess.
    (MS 11/23)
  • Determination of Hamiltonian properties (real/complex, Hermitian/non-Hermitian) is corrected. Uncorrelated and correlated parts of the Hamiltonian are analyzed separately.
    ((HDM 10/23)
  • More than one electronic bases are possible for single-set.
    ((HDM 8/23)
  • "set terminal x11" and "-geometry +0+0" removed from plot-routines, as those commands created problems on Mac.
    ((HDM 7/23)

Revision 5,  (June 2023)  (Public: June 28, 2023)

  • ---- Version 8.6.5 released. (June 28, 2023) ----
  • Automatic parameter detection is improved. The parameters maxham, maxpar, maxpes, and maxrd are now automatically determined and should not be given in an ALLOC-SECTION.
    The mctdh program writes now the file opt-alloc to name directory. This file displays the optimal parameter values. One may simply copy/paste the ALLOC-SECTION from there to the input file.
    ((HDM 06/23)
  • For the DVRs HO and rHO (pbasis) one may use parameters rather than numbers when specifying x-eq, freq, and mass. Similarly, in a build-block of a INIT_WF-SECTION one may use parameters for freq and mass, when the type is HO.
    ((HDM 06/23)
  • plflux now writes the correct energy symbol on x-axis.
    chnpot: There are now keywords cpdfile and cpddir or options -cf and -cd for reading cpd-files. The option -cpd is obsolete.
    ((HDM 05/23)
  • Bug fixed in mreport (missing 'int()' added). CPLINES increased from 800 to 2000.
    h3o2.op: Hamiltonian-Section for dipole operator added.
    ((HDM 05/23)
  • Support for zsh (Mac).
    ((MS 05/23)
  • crosscorr now knows the options -HC and -DT. See crosscorr86 -h for details.
    ((HDM 05/23)

Revision 4,  (April 2023)  (Public: April 06, 2023)

  • ---- Version 8.6.4 released. (April 06, 2023) ----
  • The stability of block improved relaxation with symmetry (keyword: symcoeff=persist or symcoeff=persist,dav) is improved.
    ((HDM 01/23)
  • Bug fixes in psidat, flxgth.F90, and flxutils.F.
    ((HDM 02/23)
  • New program compactoper that reduces the rank of a sum-of-products operator in new sub-directory and optools.
    Moved natpot2cpd chnpot into opertools directory. See also Potfit/CANDECOMP Tools on the front page of the HTML documentation.
    (MS 03/23)
  • The programs mcpotfit and mccpd may read the integer parameter iup as argument of the option -up. The parameter iup is passed to userpot.F90. This allows to write userpot routines which select between PES and a specified component of a DMS. (See userpot.F90.h3o2 for an example).
    (HDM and MS 03/23)
  • npotminmax is overhauled and reading of CPD files is added.
    (HDM 03/23)
  • rdcheck now knows the option -ec and -ea for printing the total energy in cm$^{-1}$ or au, respectively. The option -diff prints additionally E(t)-E(0).
    (HDM 04/23)
  • autospec now additionally writes the g5 filtered spectrum to the 5th column of the output file. If -lin is set, it writes additionally a g2 filtered spectrum to the 5th column of the output file. This diminishes the need to run autospec twice, once with -lin once without.
    (HDM 04/23)
  • There is a new version of the lab-session, which may be downloaded from the packages website or via svn. This new tutorial is migrated to MCTDH version 8.6 and contains a new chapter on ML-MCTDH and mccpd.
    (HDM 04/23)

Revision 3,  (Jan 2023)  (Public: Jan 13, 2023)

  • ---- Version 8.6.3 released. (Jan 13, 2023) ----
  • flux86 now knows the option -lprojonly. When set, flux86 produces a projected (reduced) WF where one or several modes are removed.
    (HDM 06/22)
  • New routine rst2psi86 implemented. It converts a restart file to psi format.
    The routine twopdens86 can now work with ML-wavefunctions as well.
    ((HDM 07/22)
  • The compile scripts compile.cnf_le and compile.cnf_be are updated. They can now detect the glibc version. The scripts compile.cnf_lenp and compile.cnf_benp are removed.
    ((HDM 12/22)

Revision 2,  (May 2022)  (Public: May 18, 2022)

  • ---- Version 8.6.2 released. (May 18, 2022) ----
  • Added -hist2 option to chksampling for creating 2D histograms.
    (MS 05/22)
  • Parameter values in subroutine parameter_defaults on allocate_para.F90 are reduced. The current default values for the parameters are displayed in the HTML-docu "Input Documentation"/"ALLOC-SECTION".
    (HDM 04/22)
  • readspf (in build block) can now read not only the first SPF, but higher SPFs as well. Moreover, electronic SPFs of a single-set run can now be read by readspf.
    (HDM 03/22)
  • unmodified is a possible new argument to relaxation (only for ML). If relaxation=unmodified is set, then the initial Wf is precisely the Hartree product as defined in a build block. Otherwise (for ML) the initial WF is modified by adding small constants to the A-vectors. The latter modification speeds-up the relaxation, but in some cases this modification may not be wanted.
  • New flux-projectors p-1d and p-2d which project onto 1D or 2D momentum states.
    (HDM 03/22)
  • The convenient x=.. y=.. input of key 20 now works for all tasks of showpot and showsys. Moreover, rather than x=<DOF-number>, it is also possible to write x=<modelabel>.
    (HDM 03/22)
  • Several pl-scripts know now the option "-% term", where term is gnuplot terminal to be used (e.g. x11).
    (HDM 03/22)
  • sumspec has new options, in particular -prod, which produces products rather than sums.
    (HDM 02/21)
  • flux86 can be run in parallel, using OpenMP. (Compile with -P).
    (HDM 02/21)
  • -Os option added to flux. This option causes a symmetrization like 0.5(O*F+F*O), where F is the flux operator. Due to this symmetrization it is possible to apply operators which act on the CAP-mode.
    (HDM 01/22)
  • The operator symbol p%<integer> is implemented. p%k projects onto the k-th momentum grid point of an FFT grid. Works only for FFT.
    (HDM 01/22)
  • rdgrid86 now prints the FFT momentum-grid if the option -pgrd is given.
    (HDM 01/22)

Revision 1,  (December 2021)  (Public: December 21, 2021)

  • ---- Version 8.6.1 released. (December 21, 2021) ----
  • The version 8.6 contains now all programs of version 8.5.
    (HDM 12/21)

  • "thermal" in combination with ML did not work correctly. The bug, noted by Yifan Lai, was introduced in the last version.
    Bug fixed for ML-operate. It occurred only when a separable operator did not have full rank.
    (HDM 12/21)
  • New program cpdcorrelation added. It computes pair wise correlation entropy between modes of a cpd file.
    (MS 11/21)
  • New options -cov and -rem2 in chksampling for writing the covariance matrix and to remove large energies from trajectories. chksampling checks the sampling points of a mccpd/mcpotfit run.
    (MS 11/21)
  • showsys corrected. There was a bug which occurred when the number of packets was larger than the largest gdim, and when rstxxx files of a block relaxation were plotted.
    (HDM 10/21)
  • showpot can now plot cpd files.
    chnpot can now interpolate cpd files.
    expect can now mix fft/sin/exp when reading a psi-file from a different name-directory.
    (HDM 08/21)

Revision 0,  (June 2021)  (Public: June 24, 2021)

  • ---- Version 8.6.0 released. (June 24, 2021) ----
  • An ALLOC-SECTION can be added to the input file. This allows to adapt the most important parameters without re-compilation. The values of the parameters maxdim and maxsta are detected automatically. Currently the version 86 misses potfit, mcpotfit, mccpd, vcham, fd_cmplx, fd_real. I.e. the version 86 contains the mctdh program and all analyse programs, except for those related to (mc-)potfit. These are: npotminmax, showpot, natpot2cpd, and chksampling.
    (HDM 06/21)

Version 8    Release 5

Revision 14,  (June 2021)  (Public: June 24, 2021)

  • ---- Version 8.5.14 released. (June 24, 2021) ----
  • rdgpop now knows the option -last.
    The keyword rho-norm is added to the RK-integrators. The error-measure then includes the density matrix. This avoids very small step sizes when there are unoccupied SPFs. Works also for ML.
    The RK integrators now take 5% smaller steps. This reduces the number of repetition steps.
    (HDM 05/21)
  • SVD regularization of the EOM for the SPFs implemented. See J.Chem.Phys. 148, 124105 (2018). The new keyword "eps_svd" in integrator-section defines the regularization parameter. If it is zero, no SVD regularization, but normal density regularization is performed. SVD regularization is not implemented for ML!
    (HDM 03/21)
  • Spawning of SPFs (dynamical SPFs) implemented. See J.Chem.Phys. 153, 234114 (2020), the Run-Section of the HTML-docu, and the section 8.2 of the guide. Spawning is not implemented for ML!
    (DMT 03/21)
  • Added sections 2.8 and 15 to the guide. These sections describe how to perform statistical thermalization. There is also a new script runthermal on $MCTDH_DIR/bin .
    New options for rdcheck85, sumspec85 and mctdh85.
    (HDM 12/20)
  • Added section 14.7.2 to the guide on how to link TNUM/TANA with mcpotfit or mccpd.
    (MS 11/20)
  • VCHAM updated. See doc/vcham/scripts/pyr4_val/readme.txt .
    (DMT 11/20)
  • Ported python code to python3. (The files on bin/python/oct are still python2. They will be ported soon).
    (MS 11/20)

Revision 13,  (September 2020)  (Public: Sep 30, 2020)

  • ---- Version 8.5.13 released. (Sep 30, 2020) ----
  • Important bug fixed in zeiginwf.F which could lead to wrong results for runs with single-set electronic states.
    (HDM 09/20)
  • rdgpop now knows the option -s, which suppresses informative-only part of output (short output).
    (HDM 09/20)
  • Mapping operators can be read in with the keyword readmap.See "Hamiltonian Documentation/Lables-Section". Mapping operators are useful for SQR-MCTDH.
    The keyword numberproj in Run-Section allows to conserve the particle number of each SPF in a SQR-MCTDH calculation.
    (HDM and SS 09/20)
  • autospec85 can now also read an expectation file. This is useful for propagations starting from thermalized states.
    (HDM 09/20)
  • Bug fixed in rdspf84, format of prinout was incorrect in some cases.
    (HDM 09/20)
  • mctdh84 now knows the option -thermal by which the temperature and seed can be given for a thermal relaxation.
    (HDM 09/20)
  • operate now works also for ML-wavefunctions.
    (HDM 08/20)
  • The selection of the DOFs of a density to be plotted by showsys is made more convenient.
    (HDM 07/20)
  • showsys85 and dengen85 can now work with ML-wavefunctions.
    (HDM 07/20)
  • The Run-Section keywords expect and cross now work for ML-runs. For cross, however, identical trees, including identical numbers of SPFs are required for system- and cross-WF.
    (HDM 07/20)
  • flux85 now has the full functionality for ML-wavefunctions. Similarly, one may now use wfproj85 for ML-wavefunctions.
    (HDM 07/20)

Revision 12,  (June 2020)  (Public: June 25, 2020)

  • ---- Version 8.5.12 released. (june 25, 2020) ----
  • Bug fixed in expect85. PLeg operators and Wigner operators with exp had been ignored. (On the fly expectation worked correctly).
    (HDM 06/20)
  • Some output formats for vchfit85 (mainly for operator file) have been changed. The use of 10 and more electronic states is now possible.
    (HDM 06/20)
  • The thermalization procedure is overhauled.
    (HDM 04/20)
  • New script lownp.py, it reads and analyses the lownatpop file.
    (HDM 02/20)
  • There is a new keyword allcomplete in RUN-SECTION. If set, all SPFs are kept fixed and the propagation is only through the A-vector. One performs a standard method propagation in the basis given by the initial SPFs.
    (HDM 02/20)
  • Several bug fixes in parallelization.
    (MS 02/10)

Revision 11,  (November 2019)  (Public: Nov 11, 2019)

  • ---- Version 8.5.11 released. (Nov 11, 2019) ----
  • Updates of mccpd and its ducumentation.
    (MS 11/19)
  • For Mac user: The compile scripts are now compatible with Xcode 11. The gcc/gfortran compiler are assumed.
    (HDM 11/19)
  • First version of dynwf implemented. dynwf is an algorithm for the dynamical expansion of the MCTDH wavefunction (i.e. the numbers of SPFs) on-the-fly. Currently this works only for MCTDH, but not for ML-runs. See dynspf and initorb in HTML-docu, Run-Section.
    (DMT 11/19)
  • An ML-run now additionally writes the natural populations of the non-bottom nodes to check file. rdcheck85 and plnat now knows the option -ml, which allows to print/plot the natural populations of non-bottom nodes of an ML-run.
    (HDM 10/19)
  • With the new keyword operate_ortho a number is substracted from the operator, O -> O-s, such that the operated wavefunction is orthogonal to the initial one. See the HTML docu (Init_WF-Section) for details.
    (HDM 09/19)
  • There is a new analyse routine, rdspf84, which prints the SPF coefficients to screen. (Developed by G. Worth).
    (HDM 09/19)
  • There is a new keyword, euclid, for the build part of the Init_WF-Section. It generates an initial SPF where only one grid point is populated. (I.e. the SPF is represented by an euclidean vector). Similarly, there is a new projector, pop1, for flux and wfproj. It projects on a single grid point of an SPF.
    (HDM 07/19)
  • The action of the read keyword (see Hamiltonian Documentation/Labels-Section) is extended. With read one can now read in mode operators, if they are represented by a real matrix. For reading diagonal mode operators please use readsrf. (Previously read could handle only DOF operators, but not operators acting on a combined mode.)
    (HDM 06/19)
  • The generation of initially unoccupied SPFs is overhauled. It is now more stable.
    (HDM 04/19)
  • The defaults of the GNU ar command have changed. In the compile.cnf scripts the MCTDH_ARFLAGS is changed from rlc to rlcU when the used ar command knows the U-flag. (Problem noted by IU).
    (HDM 03/19)
  • Checkin of new program mccpd (Monte-Carlo CPD/CANDECOMP). This is an alternative to Potfit and MC-Potfit, but yields more compact potential representations. mccpd can handle rather large problems (~30D). See the HTML docu of mccpd. (MS 03/19)

Revision 10,  (Feb 2019)  (Public: Feb 07, 2019)

  • ---- Version 8.5.10 released. (Feb 07, 2019) ----
  • crosscorr now supports the option -M which treats the reference WF as time-dependent. It hence can compute time-dependent overlaps and matrix-elements.
    (HDM 10/18)
  • plgen can now read an input file (argument-file). Try "plgen -f" to inspect an example argument-file. There are also new options: -j, -J, -S, -B, -C.
    (HDM 11/18)
  • There is a new program: natpot2cpd. It read a natpot file (generated by Potfit or MCPotfit) and converts it to a canonical polyadic decomposition (CPD) (also known as CANDECOMP or parallel factors). An alternating least squares (ALS) algorithm is used.
    (MS 12/18)
  • The routine hfco.f on addsurf was buggy. Please download addsurf again!
    sumspec can now sum up to 9 data columns.
    The tasks continuation, rdnpot, and cutnpot of POTFIT and their documentation is overhauled.
    (HDM 01/19)

Revision 9,  (July 2018)  (Public: Jul 25, 2018)

  • ---- Version 8.5.9 released. (Jul 25, 2018) ----
  • Pthreads now working on MacOS (vers. >= 10.6)! One needs GCC from MacPorts and must use little-endians.
    (MS 05/18)
  • Monte-Carlo Potfit Several improvements for mcpotfit85 implemented. Among others: Symmetry operations may now be defined by coordinate-expressions (rather than being grid based). Multiple trajectories possible for all samplings. Extended grids are now also allowed for the contracted mode.
    (MS 05/18)
  • The code for the thermalization of an initial wavefunction is completely written anew. Now the coefficients are randomized at the SPF level (instead of the A-vector).
    (DMT 06/18)
  • Bugs in VCHAM fixed.
    (DMT 07/18)

Revision 8,  (February 2018)  (Public: Feb 13, 2018)

  • ---- Version 8.5.8 released. (Feb 13, 2018) ----
  • A new version of vcham is ported from Quantics.
    (HDM 01/18)
  • overlap85 knows the new option -p. With it trace(P_bra P_ket) is written to the file projection, where P_bra P_ket denote the projectors onto the SPF spaces of the bra and the ket Wf, respectively.
    (HDM 01/18)
  • Monte-Carlo Potfit Some smaller improvements for mcpotfit84 implemented. A chapter on Monte-Carlo Potfit is added to the guide.
    (MS 12/17)

Revision 7,  (September 2017)  (Public: Sep 22, 2017)

  • ---- Version 8.5.7 released. (Sep 22, 2017) ----
  • Multi-Layer Operators (MLOps) are an alternative to the sum-of-products representation of the Hamiltonian, and allow for a (much) more efficient evaluation of the matrix elements/equations of motion when ML-MCTDH is used. MLOps are created by reading multi-layer potential fits (MLPFs) with the mlpf keyword in the operator file.
    Warning: This is a substantial change to some of the core parts of (ML-)MCTDH, and as such may have unintended side effects. You are therefore advised to check your results against previous releases, and are asked to report any problems or discrepancies you encounter.
    Note: Most analysis programs do not yet work with MLOps, except expect85.
    (FO 2013−2017)
  • Multi-Layer Potential Fits (MLPFs) can be generated with the Multi-Layer Potfit (MLPF) program. See the HTML-docu. Note that MLPF has to be compiled separately, it is not compiled by the MCTDH compile script.
    (FO 2013−2017)
  • It is now highly recommended to use a compiler that fully supports Fortran2003.
  • Monte-Carlo Potfit (mcpotfit85) code is further improved, the MPI-parallelization is enhanced and a new algorithm for symmetrizing a natpot is added. See J.Chem.Phys. 147 (2017), 064105.
    (MS 09/17)
  • There is a new keyword select, which allows to read a selected subset of initial SPFs from a foreign restart file.
    (HDM 09/17)
  • Code for thermalization of an initial MCTDH-wavefunction implemented.
    (DMT 08/17)
  • Compile scripts updated. The file platform.cnf.priv.template is re-written.
    (HDM 02/17)
  • The keyword sdq was not properly treated in sin-DVR. Fixed.
    (HDM 01/17)

Revision 6,  (November 2016)  (Public: Nov 25, 2016)

  • ---- Version 8.5.6 released. (Nov 25, 2016) ----
  • mreport updated, more files saved, three chunks for large files.
    (HDM 11/16)
  • flux85 can now work with ML-wavefunctions. Uncorrelated operators may be used, but correlated operators
    and in particular projectors can currently not be used when ML-wavefunctions are analyzed.
    (HDM 11/16)
  • A code for thermalization of an initial ML-wavefunction is implemented.
    (DMT 09/16)
  • Major revision of MC-Potfit, parallelization improved.
    (MS 08/16)
  • One may now use the same restart file for the "file=..." and "orthogonalise=..." statements of the MCTDH init_WF-Section.
    In this case it is no longer necessary to use a copy of the restart file.
    (HDM 07/16)
  • New program concat implemented. It generates a (Hartree) product of two MCTDH wavefunctions. psi(x,y)=psi1(x)*psi2(y).
    (HDM 05/16)

Revision 5,  (Apr 2016)  (Public: Apr 15, 2016)

  • ---- Version 8.5.5 released. (Apr 15, 2016) ----
  • Severe bug fixed in subroutine sortktms on heinsort.F .
    This bug occurred only for LMR operators under certain conditions.
    (Operator added with a none unit coefficient, and appeared more than once).
    Bug found and fixed by Falk Richter.
    (HDM 03/16)
  • compile scripts updated to work with GCC 5.* (Thanks to Frank)
    The script install_mctdh now sets links to compile.cnf and platform.cnf rather than copying the files.
    (HDM 01/16)
  • Routine norm is made compatible with ML-format.
    (DMT 11/15)
  • showsys can now plot the densities of split restart files, rstxxx, even in the original name-directory (with packets DOF).
    Generating an extra name-directory without the packets DOF is no longer needed.
    (HDM 11/15)
  • sumspec : works now also with 2 or 3 columns
    jinpol : An extra file for energies may be given, (option -ef)
    (HDM 10/15)

Revision 4,  (Sep 2015)  (Public: Sep 10, 2015)

  • ---- Version 8.5.4 released. (Sep 10, 2015) ----
  • The analyse program rdacoeff85 can now work with psi files in ML format.
    (DMT 08/15)
  • New analyse program rdnatpot85. It reads a natpot file and prints information on it to rdnatpot.log.
    (HDM 06/15)
  • The option -D writes the output to an external directory when running showd1d, showsys, or showpot.
    This is useful if one has no right to write to the name directory.
    (HDM 06/15)
  • New script mreport that collects all relevant data from a name directory. Intended for filing support requests.
    (MS 05/15)
  • Monte-Carlo Potfit (mcpotfit85) code is improved, in particular some parts are MPI-parallelized.
    (MS 03/15)
  • Coordinate transformation for potential energy surfaces is added. The PES is to be defines in opfuncs/trasrf.F
    See HTML-Docu: Potfit/Input Documentation/transformation-section.
    (KS 03/15)
  • twprop, crosspec, autospec, sumspec: Blank lines and lines that start with a '#' are ignored
    when reading cross, auto, or spectrum files, respectively.
    (HDM 11/14)
  • Bug fixed in einmlbas.F. There was a boundary violation when checking the correctness of the tree.
    (HDM 11/14)

Revision 3,  (October 2014)  (Public: Oct 13, 2014)

  • ---- Version 8.5.3 released. (Oct 13, 2014) ----
  • A first (experimental) version of Monte-Carlo Potfit (mcpotfit85) is implemented. See HTML documentation.
    (MS 10/14)
  • The routine energdstr will find the energy interval for the energy distribution (correction=dia) now more safely.
    (HDM 09/14)
  • Bug fixed in gtheta on flxutils.F. Incorrect results were produced by flux85 when electronic states were present.
    (HDM 08/14)
  • Index-out-of-bounds bug fixed in clusterbuild.
    (MS 07/14)
  • "Map" can be used to add up to three initial 1D-SPFs.
    A dummy routine mpigetdavmatz is added, otherwise no MPI compilation.
    (HDM 06/14)
  • Block-DAV and cDAV can now use a preconditioner. Implementation done by Letitia.
    (HDM 02/14)
  • New Wigner operators, jpjz, jzjp, jpjzs, jzjps, etc. implemented by Phillip Thomas.
    (HDM 01/14)
  • New keyword "readspf" for the build-section. This allows to read an initial SPF from an external file.
    Weights (w^1/2) may be multiplied to the function. (HDM 06/14)
    (FO 01/14)
  • A large natpot can be reduced in size with the keyword "reduce-pf" in Operator-Section.
    (HDM 01/14)
  • Parallel versions of "getdiagonal" and " bgetdiagonal" implemented.
    (MS 12/13)
  • expect85 can now handle ML-MCTDH wavefunctions.
    (FO 12/13)

Revision 2,  (November 2013)  (Public: November 22, 2013)

  • ---- Version 8.5.2 released. (November 22, 2013) ----
  • ml2mctdh now supports reading/writing restart files.
    (FO 11/13)
  • ML-MCTDH now supports reading non-ML restart files.
    (FO 11/13)
  • The HTML-docu for Improved-Relaxation is updated. See Run-Section.
    (HDM 11/13)
  • Keyword realphi added to Run-Section. Useful in RDAV-runs when FFT or PLeg is used. Also keyword realpsi added to Init_WF-Section.
    (HDM 11/13)


Revision 1,  (September 2011)  (Public: September 27, 2011)

  • ---- Version 8.5.1 released. (Aug 20, 2013) ----
  • Continuation lines are now possible in the Hamiltonian tableau.
    (HDM 06/13)
  • Wigner matrices implemented.
    (PST 06/13)
  • KLeg/PLeg operators, jpjm = j_+ * j_- and jmjp = j_- * j_ are implemented.
    (HDM 04/13)
  • Multi-Layer MCTDH can now use shared-memory parallelization.
    This is realized via OpenMP directives. There is a new compile switch, -P, which enables the relevant compilation flags.
    (FO 04/13)
  • The embedded copies of BLAS and LAPACK are updated.
    (FO 03/13)
  • The vpot generation of POTFIT has been MPI-parallelized.
    (FO 02/13)
  • Parallel builds (compile -j) now work without problems.
    (FO 12/12)
  • MPI communication is optimized in various subroutines. The keyword summf2 is removed as summf2 is now default. The old standard is established through the keywords no-summf2 or summf1.
    • (MS 10/12)
  • The keyword cutalong is added to the run-section of potfit. It requests to perform a cut along a specified DOF of the PES (both exact and fitted).
    • (DPR 08/12)
  • A problem with flux is fixed. flux85 did not work correctly, when the option -es was used and a full projection was made.
    (HDM 07/12)
  • Option -lin added to autospec. If set, the box-filter g0 is replaced by a linear filter g(t) = 1 - t/T. The filters g1 and g2 are then replaced by linear combinations of the linear filter with cos or cos^2 filters, respectively. In plspec these filters are accessible via the option -g3, -g4, or -g5.
    (HDM 07/12)
  • New keyword print-npot added to operator-section. Most of the natpot-lines are now suppressed in the op.log file, print-npop restores the previous behavior.
    (HDM 06/12)
  • Some tuning for the Runge-Kutta integrators to achieve better step-size predictions. This may require a slightly better accuracy setting.
    (FO 03/12)
  • New analyse program npotminmax implemented. It is similar to vminmax but works directly with natpot files.
    (MS 03/12)
  • Option -E added to showd1d. It shows the population of all grid-point over time. This may be used to plot electronic populations of single-set runs.
    (HDM 01/12)
  • Modified statistical analysis so that weighted trajectories can be used. Documentation of statistical analysis is updated.
    (MS 02/12)
  • A problem with plstate is fixed. This includes a modification of rdcheck.F
    (HDM 11/11)
  • Keyword twall and option -twall added. This allows to stop a run after some elapsed wall-time (real time). Useful for parallelized runs.
    (HDM 10/11)


Revision 0,  (September 2011)  (Not Public)

  • ---- Version 8.5.0 no release. (September, 2011) ----
  • ML-MCTDH code, written in FORTRAN95, is added.
    (OV 03/10 ... 12/10)
  • All changes of version 8.4.7 are ported to 8.5.0
    (HDM 09/11)


Version 8    Release 4

Revision 7,  (September 2011)  (Public: September 27, 2011)

  • ---- Version 8.4.7 released. (September 27, 2011) ----
  • dvrweights.f modified to avoid overflow when very long grids are used.
    install_mctdh adjusted to allow longer path length.
    (HDM 09/11)
  • Formats for sys-time changed in timing.F to avoid '***' output.
    (HDM 08/11)
  • Bug fixed in flux. Appeared when both options -O and -es are used.
    (HDM 08/11)
  • Cluster-expansion related python tools. These include:
    - statistical analysis ('clusterstat' and 'clusterana')
    - sampling of clusters on a DVR ('clusterbuild')
    - tool to test PES files generated by MCTDH ('chkpes').
    (MS 06/11)
  • LMR (left/middle/right) operators implemented. This allows for using operators of the form:
        d/dx * v(x,y) * d/dy
    where (x,y) are in a combined mode.
    (HDM 04/11)
  • Fix library routine dtxxyz. The first gridpoint had been forgotten.
    Previous calculations with operator terms of htmtype=4 should be checked.
    (FO 02/11)

Revision 6,  (January 2011)  (Public: January 07, 2011)

  • ---- Version 8.4.6 released. (January 07, 2011) ----
  • Derivative form of flux evaluation (-d option) added to flux84.
    (FO 01/11)
  • vminmax: added options to run over selected grid-points (trajectory, -t option) and to compare PES with ASCII file (-c option).
    (MS 11/10)
  • The file "input" of POTFIT is made read-only (similar to MCTDH).
    (HDM 11/10)
  • Block-Davidson when using "rlxemin=.." performs now better. The treatment of already converged states was not optimal.
    (HDM 11/10)
  • Memory allocation modified to allow to allocate more memory for analyse routines and potfit.
    (HDM 11/10)
  • Implementation of multi-target operators for optcntrl.
    Example inputs added to inputs/optcntrl/.
    Keyword "usepack" added for Hamiltonian-Sections.
    (MS 09/10)
  • Option -max added to rdacoeff. rdacoeff can print the number of coefficients with absolute value between thr and max.
    (HDM 09/10)
  • Some max-parameters in include files increased.
    maxkoe, maxhtm, maxhop: 2000 --> 9600
    maxrdf: 16 --> 64 ;   maxpes: 24 --> 92 ;   maxham, maxmuld: 32 --> 64.
    (HDM 09/10)

Revision 5,  (June 2010)  (Public: June 25, 2010)

  • ---- Version 8.4.5 released. (June 25, 2010) ----
  • flux84 and wfproj84 can now handle wavefunctions for identical particles (id keyword).
    flux84 now writes an iwtt file (integral over wtt).
    (HDM 06/10)
  • Block improved relaxation for complex Hermitian Hamiltonians is MPI parallel.
    (MRB 06/10)
  • The keyword split-rst is now recognized in geninwf runs as well.
    (HDM 05/10)
  • There is a new keyword reflex (Run-Section) which enables to make use of symmetry in e.g. malonaldehyde.
    (HDM 05/10)
  • autoblock works now for fermions as well. (Bug fixed).
    fast now works with continuation. (Bug fixed).
    (HDM 04/10)
  • The file input is made read-only. This makes it less likely that this file is erroneously edited.
    (HDM 05/10)
  • Block improved relaxation is now possible for complex Hermitian Hamiltonians as well (DAV rather than RDAV or rrDAV).
    (HDM 03/10)
  • The mctdh executables are now under $MCTDH_DIR/bin/binary/<platform> and no longer under $MCTDH_DIR/bin/<platform>.
    (HDM 03/10)
  • The routine chnpot can now handle combined modes with more than 2 DOFs.
    (MS 02/10)
  • The C-DAV routine (complex davidson for resonances) is MPI-parallel.
    (MRB 01/10)

Revision 4, Patchlevel 2  (December 2009)  (Public: December16, 2009)

  • ---- Version 8.4.4.2 released. (December 16, 2009) ----
  • Bug removed in Block-Improved-Relaxation which occurred when using MPI.
    The check_system script is updated. It now checks additionally for shared memory and NUMA libraries.
    (MRB 12/09)

Revision 4, Patchlevel 1  (December 2009)  (Public: December09, 2009)

  • ---- Version 8.4.4.1 released. (December 09, 2009) ----
  • New operators implemented: Rf, hKEh, hFRh, hdqh, hdqRh, dqR, dq2R.
    Bug fixed in project.F, which was introduced in version 8.4.4. This bug let calculations with identical particles fail.
    (HDM 12/09)
  • RRDAV (improved relaxation for real operators) can now treat (multi-set) electronic states.
    Elk_test can check parallel MCTDH now.
    (MRB 12/09)
  • The gcc 4.4.1 now compiles the package correctly.
    (MRB 10/09)

Revision 4 (September 2009)  (Public: September 11, 2009)

  • ---- Version 8.4.4 released. (September 11, 2009) ----
  • NUMA has been introduced to MCTDH.
    (MRB 09/09)
  • A chapter "Installing the MCTDH package" is aded to guide Appendix E.
    compile.cnf and platform.cnf scripts updated. A installation on Mac OS X (Darwin) should now be painless.
    The read-inwf feature can now handle (complex) weight factors which multiply the A-vectors of different electronic states.
    New analysis routine edengen. (Thanks to Emmerich Tempfli and Sascha Zoellner).
    Showpot now knows the option -evec which writes the natural potential terms (eigenvectors of rho) to an ASCII file.
    (HDM 08/09)
  • Conversion constants (energy, length, mass) exchanged with more accurate ones. See on-line docu "Input Documentation / Units" or excecute "mhelp -s unit".
    (HDM 07/09)
  • Ported optcntrl script to python
    New version of optcntrl documented in tutorial and on-line docu.
    (MS 05/09)
  • The Distributed Memory Parallelization using the Message Passing Interface (MPI) has been introduced to MCTDH.
    (MRB 04/09)
  • Bug in initkleg fixed (IMPORTANT!!). A phase factor was missing for negative k.
    New KLeg operators added: sJp, sJm, sJpk, sJmk.
    (HDM 03/09)

Revision 3 (December 2008)  (Public: December 4, 2008)

  • ---- Version 8.4.3 released. (December 4, 2008) ----
  • The routine adpop can now run in a so called quick modus and can make use of Monte-Carlo integration.
    (GAW 11/08)
  • A parallel version of the DSYEV routine of LAPACK is now available. This one is used in the getdavmat and b/rdavstep routines.
    (MRB 09/08)
  • New keyword "block-A" for Init_WF-Section. It allows to read A-vectors form a foreign restart files. (For block improved relaxation).
    (HDM 08/08)
  • Build-up of the pre-conditioner for improved relaxation is parallel now. Timing of parallel routines improved. Keywords "no-calcha" and "no-funka2" removed and replaced by "no-funka".
    (MRB 07/08)
  • New analyse routines "wfproj" and "rdacoeff". wfproj computes expectation values of a projector. The projector must be defined by an SPF, P=|phi><phi| . There may be a product of projectors.
    rdacoeff reads the coefficients (A-vector) and prints them to screen.
    (HDM 06/08)
  • Partial (a)symmetrization of the A-vector implemented. This allows to treat mixtures of bosonic/fermionic systems. New script "check_system" added to install directory.
    (HDM 06/08)
  • New keywords in potfit. "read-cw" allows to read the correlated weights form file and "write-cw" writes them to file.
    (OV 05/08)
  • New keyword "block-SPF" for Init_WF-Section. It allows to read SPFs form a foreign restart file. (For block improved relaxation).
    (HDM 05/08)
  • The compile script now knows the -j option which enables parallel compilation.
    (HDM 05/08)

Revision 2 (December 2007)  (Public: December 14, 2007)

  • ---- Version 8.4.2 released. (December 20, 2007) ----
  • A description of the block improved relaxation feature is given in the tutorial section of the guide. (HDM 12/07)
  • An multi-packet run can now also be performed in single-set representation. Improved relaxation can now be done in block form. (This uses the multi-packet single-set feature). A block relaxation is quite useful if not a particular state is sought, but, say, the 10 lowest states. The new keyword autoblock automatically generates an appropriate set of initial vectors, and the keyword split-rst let the program split the restart file, which contains all eigenstates formally on different (single-set) electronic states, into individual restart files. Currently, block relaxation works only for real hermitian Hamiltonians (i.e. only for RDAV or RRDAV). Block relaxation can treat systems with electronic states of both variants, single-set and multi-set.
    (HDM 12/07)
  • Several bug-fixes in operator generation (genoper). These fixes apply to the summation of operators in general and to KLeg operators in particular: See the changelog file for details.
    (FO 11/07)
  • New keyword iteration-factor allows to speed-up the convergence of potfit iterations. Intermediate timing information is written to output file when performing a diagonalisation run. Bug fixes in runinwf.F and logop.F . (HDM 11/07)
  • The structure of the parallelization is changed, now the threads are created at the beginning of the program and are destroyed when mctdh has finished. New keywords for steering the parallelization (see html-docu).
    The array hlsym is in use again.
    (MRB 09/07)
  • Potfit can now do continuation.
    (HDM 09/07)

Revision 0 (April 2007)  (Public: April 17, 2007)

  • ---- Version 8.4.0 released. (April 17, 2007) ----
  • Shared memory parallelization improved. Mutual exclusions (mutex) introduced to reduce memory consumption.
    (MRB 04/07)
  • muld-potentials ignored time-dependence. Fixed. Keyword read1d added.
    (HDM 04/07)
  • Minor bug fixes in VCHam programs and documentation updated.
    (GAW 03/07)
  • Bug in potfit fixed. Potfit produced a wrong natpot when separable weights were used.
    Output of eigenvalues (in au) in potfit is changed to reduced eigenvalues (in eV**2). This is a more meaningful measure.
    (HDM 02/07)
  • Summation of products of real side-diagonal operators is implemented. This facilitates exact calculations when using FT'd potentials by decreasing memory and CPU consumption.
    (FO 02/07)
  • Memory allocation changed for improved relaxation. The arrays Krylov and HKrylov are allocated individually. This allows to allocate more than 32 GB for improved relaxation.
    (HDM 12/06)
  • Shared memory parallelization implemented. See on-line docu and Guide for details.
    (MRB 12/06)
  • The file adwkb and the script pladwkb are renamed to enerd and plenerd , respectively.
    (AP 11/06)
  • Release 4 created.
    This version uses less memory, because the hpsi array is much shorter. As the hpsi array has now to be re-calculated, mctdh84 may use (slightly) more CPU time compared to mctdh83. The reduction of memory consumption is considerable, if large combined grids and large potfits are used.
    Version 84 no longer supports density operator propagation and s-mctdh (selected CI).
    (HDM 11/06)
  • (All the additions to 8.3.14 are also in 8.4.0)


Version 8    Release 3

Revision 14 (April 2007)  (Public: April 17, 2007)

  • ---- Version 8.3.14 released. (April 17, 2007) ----
  • muld-potentials ignored time-dependence. Fixed. Keyword read1d added.
    (HDM 04/07)
  • Minor bug fixes in vcham programs and documentation updated.
    (GAW 03/07)
  • Bug in potfit fixed. Potfit produced a wrong natpot when separable weights were used.
    Output of eigenvalues (in au) in potfit is changed to reduced eigenvalues (in eV**2). This is a more meaningful measure.
    (HDM 02/07)
  • Summation of products of real side-diagonal operators is implemented. This facilitates exact calculations when using FT'd potentials by decreasing memory and CPU consumption.
    (FO 02/07)
  • A template file of the script platform.cnf.priv is added to the install directory. A private platform script is very convenient when a specific compiler is to be chosen for a specific machine (hostname).
    (HDM 11/06)
  • Identical lines of the operator tableau (Hamiltonian-Section) are now summed correctly. There is no longer a need to sum them "by hand".
    (HDM 11/06)
  • With the keyword "gengmat" (Run-Section) or the option "-gmat" mctdh generates a matrix-element of the G-matrix as pes-file. This is useful for checking the correctness of an implemented kinetic energy operator (by comparison with TNUM results).
    (HDM 11/06)
  • Support for sub-particle operators, i.e. operator terms that do not act on the full mode, but on more than 1 DOF. Currently the implementation is only for real diagonal terms (e.g natpots). All DOFs that the term acts on must be consecutive in MCTDH ("no holes").
    (FO 10/06)
  • Major changes in potfit. The program code is now slimmer, e.g. the possibility of generating FT-natpots is removed (use projection). Potfit now uses less memory and converges faster. The evaluation of the fit error may now be done less often. (See docu "niteration").
    (HDM 09/06)
  • Major changes to support a new method for using Fourier-transformed potfits. The new method does not use the FT feature of potfit itself; rather the Fourier components are calculated with projection and are then potfitted separately. The shifting in K is then accomplished with the (k)shift operator. The old support for FT-natpots is removed.
    (FO 08/06)

Revision 13 (July 2006)  (Public: July 27, 2006)

  • ---- Version 8.3.13 released. (July 27, 2006) ----
  • Support for installing on MS Windows via the Cygwin environment. See also our Cygwin hints.
    (FO 07/06)
  • Major changes in VCHam. VCHAM programs MCTDH compatible. Dynamic allocation in vchfit and vcplot. Keywords have MCTDH structure.
    (GAW 07/06)
  • Operators of type 0.5*(f(q)dq + dqf(q)) with f=q,sin,cos,sqrt implemented. See Appendix C of the guide.
    (OV 07/06)
  • The routines for optimal control, bin/optcntrl, efield.F, and prop.F, are updated. New routine guessfld.F. Example input files can be found on $MCTDH_DIR/inputs/optcntrl/ . See also the README file there.
    (HDM 06/06)
  • The routine prhosub can now compute the (diagonal) momentum representation of the particle density.
    (HDM and SZ 06/06)
  • New feature: one can have more than one KLeg in a combined mode:
    (i) oper file format changed
    (ii) new operator: cjpm (see hamsym.ps)
    (iii) one can use KLegs in exact runs.
    (FO 06/06)
  • crosscorr83 can now compute matrix elements. This, however, requires that the two WFs have same numbers of SPFs.
    (HDM 06/06)
  • Major changes in potfit. Projection is now a program of its own. All potfit runs are now of type direct=1, and the direct keyword should no longer be given. The format of the vpot file is changed. Showpot (but not potfit) is able to read the old vpot files.
    Version number increased to 8.3.13.
    (HDM 05/06)
  • The projection program now uses a completely new syntax and has increased functionality (additional projector functions).
    (FO 01/06)
  • New compiler environments: gfortran (-32, -64), g95. Improved GCC version check.
    (FO 04/06, 07/06)
  • Operator labels changed for CH3I and 1D potentials, e.g vh2 --> v:H2 . See Appendic C of the Guide for the new names. There is now a check that label and parameter names are disjoint. User defined parameters must not contain a colon (:).
    (HDM 04/06)
  • New directory install/AdvancedUser/ added. This directory contains some useful non-mctdh software.
    (HDM 03/06)
  • New analysis routine dengen. It generates reduced densities similar to showsys, but is not interactive and may thus run in background.
    Several bug fixes. Patchlevel increased to 1 (8.3.12.1)
    (HDM 02/06)
  • ENO (Essentially Non Oscillatory) interpolation added to chnpot.
    (OV 02/06)

Revision 12 (December 2005)  (Public: December 15, 2005)

  • ---- Version 8.3.12 released. (Dec 15, 2005) ----
  • New feature in potfit: projection runs
    (FO 11/05)
  • psi2ex can now give the exact wavefunction in second population when setting the option -pop2.
    (OV 11/05)
  • New keyword for improved relaxation, RRDAV, introduced. RRDAV is faster than RDAV but requires a "simple" operator (no KLeg etc, no muld-potentials) and cannot treat electronic states.
    (HDM 10/05)
  • Analyse routine adproj added. This routine creates vpot files of the adiabatic projector matrix elements.
    (MRB 06/05)
  • The VCHAM (vibronic-coupling Hamiltonian) set of programs is added to the MCTDH package.
    (GAW 07/05)
  • New analyse routine twprob (Tanner/Weeks probabilities), used to calculate state-resolved reaction probabilities (so this is an alternative to "flux").
    (FO 06/05)
  • New keywords symcoeff, asymcoeff, and id introduced. They are useful when treating identical particles.
    (HDM 06/05)

Revision 10  (May 2005)  (Public: May 20, 2005)

  • ---- Version 8.3.10 released. (May 20, 2005) ----
  • There are four new files: install/user_surfaces, install/user_surfdef, opfuncs/user1d.F and opfuncs/usersrf.F . These are introduced to make it easier to include new one- or multi-dimensional potentials.
    (HDM 05/05)
  • New HTML page Troubleshooting on entrance page of the HTML documentation.
    (HDM 05/05)

Revision 9  (December 2004)  (Public: December 09, 2004)

  • Bug fixed in genoper/htmsetup.F. Setting the keyword limit-mc is no longer necessary.
    (HDM 04/05)
  • There may now be a read-inwf block in the Init_WF-Section. This allows to construct an initial WF from one or several (foreign) restart files. The number of electronic states of the WF on the restart file(s) may differ from the number of states of the WF to be propagated.
    (HDM 04/05)
  • New analyse routine adpop83 to compute adiabatic state populations and one- and two-dimensional reduced densities. The script pladpop plots the densities.
    (MRB 04/05)
  • New keyword id in SPF-Basis-Section allows equate modes which have identical SPFs because of symmetry.
    (HDM 03/05)
  • New option -s in overlap allows to overlap selected electronic states. There are also the new options -b, -c and -t.
    (HDM 02/05)
  • Format of the output-file of overlap83 is changed. This file contains now the overlap and the norms, but no longer the error measures. (compare83 changed accordingly.) The output to screen is unchanged.
    (HDM 02/05)
  • ---- (patched) Version 8.3.9.1 released. (January 11, 2005) ----
  • Handling of (a)sym1d, (a)sym2d, and sym3d changed. New keyword persist (argument to the sym-keywords) added.
    (HDM 01/05)
  • Treatment of multi-dimensional potentials (muld-pot) improved. There are now more error checks.
    (HDM 01/05)
  • ---- Version 8.3.9 released. (December 9, 2004) ----
    (HDM 12/04)

Revision 8  (June 2004)  (Public: June 13, 2004)

  • Modifications on Makefile and compile.cnf_* scripts. Some compilers (e.g. g77-3.4) produce wrong object files for the LAPACK routine dlamch. This is now fixed by compiling this routine without optimization. The code of funcanld.F and einbuild.F is re-organized. The pgf77 produces now correct optimized object files.
    (FO 12/04)
  • New unit debye. New option -Mb for autospec83 and plspec. With this option one may plot the spectrum in absolute units (mega barn). (Thanks to G.J. Kroes for suggesting this.).
    (HDM 11/04)
  • The dth1 and dth2 operations are added for KLEg and PLeg. New operators Jp, Jm, Jx, Jy implemented (for KLeg only).
    (HDM 10/04)
  • New analyse routine jinpol83 implemented. This routine performs J-interpolation for scattering calculations.
    (SS and HDM 10/04)
  • Symmetrization of the SPFs during the geninwf step (and for improved relaxation additionally after each orbital relaxation step) has been added. The new keywords are sym1d, asym1d, sym2d, asym2d, sym3d .
    (HDM 09/04)
  • Keyword limit-mc implemented. This allows to limit the amount of memory allocated during the genoper step.
    (HDM 09/04)
  • The symmetrized first derivative, sdq , implemented for sin-DVR. This is for treating asymmetric functions with periodic boundary conditions (cf. cos-DVR).
    (HDM 09/04)
  • A pre-conditioner for improved relaxation (RDAV only) is implemented. The new keyword precon defines the dimension of the matrix used as pre-conditioner. The Olsen correction is applied when the new keyword olsen is given.
    (HDM 08/04)
  • KLeg-DVR can be combined with other modes.
    (SS 07/04)
  • New analyse program joinpsi83 implemented.
    (SS 07/04)
  • ---- Version 8.3.8 released (June 13, 2004) ----

Revision 7  (March 2004)  (Public: April 13, 2004)

  • A cosine-DVR is implemented. It is useful for treating "gerade" functions with periodic boundary conditions.
    (HDM 06/04)
  • Some small addition to the guide, e.g "Golden rules for writing operator files."
    (HDM 06/04)
  • The problem of the large memory consumption of the FAST algorithm is fixed.
    (SS 06/04)
  • CMF is now allowed for time-dependent operators. If the time-dependent operator is uncorrelated (i.e. if it is a mode operator), CMF should work without problems. If the time-dependent operator is correlated, be more careful and check against a VMF calculation.
    (HDM 05/04)
  • The use of Fortran functions is now possible in the Parameter-Section (see on-line docu and guide).
    (HDM 05/04)
  • New pl-script plrlx. (Energy vs. time in impr.relax.)
    (HDM 05/04)
  • mctdh83(propwf part) and potfit83 may now allocate up to 8GB memory on 64 bit systems. (The previous limit was 2GB because of the use of integer*4 numbers. On 32 bit systems (e.g. PC), the 2GB limit still exist.)
    (HDM 05/04)
  • S-MCTDH is overhauled, some bugs fixed, and documentation improved.
    New keyword converged added. This allows to stop an improved relaxation run, if the energy is converged.
    (HDM 04/04)
  • ---- Version 8.3.7 released (April 13, 2003) ----
  • Support for Intel compilers (version 8.0) added. Auto-detection of GCC version in compile configuration added.
    (FO 04/04)
  • The new analyse routine rdgrid83 writes the DVR grid points to screen. Showd1d now knows the option -l (logarithmic plot).
    (HDM 04/04)
  • New H2-H2 potential surface added. (h4bmkp.f).
    (FG 03/04)
  • FAST algorithm up to the 4-th level (6-mode calculation) is implemented. Fast and Natpotcut are extended to work with several natural potentials.
    (SS 03/04)

Revision 6  (February 2004)  

  • The program showsys83 now knows the option -pop2 . When this option is given, showsys83 will plot the WF-density in the second representation, i.e. displays the basis set occupation rather than the DVR-grid occupation. For FFT this means, that the momentum distribution is displayed.
    (HDM 03/04)
  • An initial WF can now be orthogonalised against another MCTDH WF read from a foreign restart file. Keyword: orthogonalise= path where path denotes the path of the foreign restart file. This feature is useful for improved relaxation.
    (HDM 02/04)
  • The analysis routine, crosscorr can now overlap two restart files (use -R and -r options).
    (HDM 02/04)
  • A set of new scripts, mdircp, mdiff, mbackup, ld, implemented. With these scripts one may set up a convenient backup sytem, useful when developing new code. mdircp allows to copy a whole MCTDH directory, and mdiff compares MCTDH directories. See also "The MCTDH backup utility" from the entrance page (Developer's Manual).
    (HDM 02/04)

Revision 4-5  (August 2003)  (Public: December 23, 2003)

  • A new analysis routine, psi2rst, is implemented. It writes a wavefunction from psi file to a restart file.
    (HDM 12/03)
  • A flux operator is implemented (see guide Operator Functions). One may diagonalize this operator with eigenf to obtain flux eigenstates. Works only for sin-DVR, exp-DVR and FFT.
    (HDM 12/03)
  • New keyword imp-ortho for the INTEGRATOR-SECTION implemented. The orthognormality of the SPFs is improved. Works only for the Runge-Kutta integrators rk5 and rk8.
    (FO 12/03)
  • The program chnpot is overhauled and its input format is changed.
    (SS 12/03)
  • New flux-projector read implemented. This allows to read an SPF from a "foreign" restart file and take it as projector. This "foreign" restart file may be build by an MCTDH-geninwf run.
    New label readsrf implemented. This allows to read a potential energy surface as energy-points from file.
    (HDM 11/03)
  • Two-dimensional cpp, cmm symbols are added. See "Hamiltonian/Liouvillian Documentation"/"Available Surfaces". These 2D functions are needed for the 4-atom, J>0, kinetic energy operator in Jacobian coordinates.
    (SS 11/03)
  • Makefile and compile-script changed, such other but GNU make will work again. The make used, however, must support the include directive.
    (FO 10/03)
  • showsys83 can now read the restart file. This is useful e.g for plotting wavefunctions from a relaxation run, where the psi file is not needed.
    Printout to rlx_info file improved (Davidson). New keywords rlxemin, rlxemax for improved relaxation.
    "eigenf" may now be applied to complex, but hermitian, operators.
    The keyword "continuation=integrator" or the option "-ci" performs a continuation run WITH reading the Integrator-Section.
    (HDM 10/03)
  • New feature meigenf (mode eigenfunctions) implemented. This allows to compute (multi-dimensional) eigenfunctions of mode operators. New script pladwkb implemented.
    (HDM 09/03)
  • overlap can now compute the overlap between a wavefunction and a density operator of type II. Norm and trace are printed to the check-file (densities only).
    (CC 09/03)
  • Keyword excite in the generation of the KLeg-Inwf added. New PES for H3O (WDSE) added. (See addsurf). Bug in coortrans.f fixed.
    (SS 08/03)

Revision 3  (July 2003)  (Public: August 20, 2003)

  • New operator functions: asleg and aslegth, associated Legendre functions of x and cos(x); reY and imY, real and imaginary parts of the spherical harmonics Ylm(theta,phi). (See guide Tables C.1 and C.5 )
    (HDM 08/03)
  • CAPs and "continuation" both now work for density operators of type II. Approximate raising/lowering operators for Morse potential are implemented.
    (CC 08/03)
  • natpots may now be time-dependent. (Thanks to O. Kuehn, who noted this bug.)
    (HDM 07/03)
  • New Davidson diagonaliser implemented for improved relaxation. There are actually three new "integrators" DAV, RDAV and CDAV, for the hermitian, real and complex case. New keywords: lock and quad as arguments for relaxation, tout=all , sym and check as arguments to pop, and energyorb and stdorb (Integrator-Section).
    Timing for orben, trafo and cross included.
    (HDM 07/03)
  • New analyse program herma83. It checks the hermiticity error of the A-vector. Only for densities of type II.
    (CC 07/03)
  • Bug fixed in the CMF integrator when using fixed update times (CMF/fix) which caused the integration of the SPFs to be only of first order instead of second.
    (FO 07/03)
  • 1) Bug fixed (wrong pointer in htmprodpot) when multiplying complex potentials. CAPs will not be summed.
    2) More (useful) output is now written to the log-file for diabatic correction (keyword "correction=dia").
    3) crosspec produces now a slightly different output. The output is multiplied by 1/pi and the order of the columns is different. This makes firstly autospec and crosspec consistent and secondly allows to read the cspec.pl file by flux83 (-ed option). The option -old restores the old output format.
    (HDM 07/03)

Revision 2  (Apr 2003)  (Public: June 11, 2003)

  • The evaluation of 'analytic' external operators (linint.F, keword: external1d) is improved. The fitting is now done with a linear combination of quadratic functions rather than with linear interpolation. This gives much better fits.
    The treatment of complex potentials is improved. The Time functions may be complex, i.e. Exp or I may appear in the Time column.
    (HDM 07/03)
  • Some small bugs fixed: einpbas.F, plqdq, plnat and plstate.
    A more severe bug concerning the exp-DVR fixed. The expectation values were incorrect, and one could not use more than one exp-DVR.
    Documentation improved (input; guide: chapter 6.5, 6.6, symtab,tex).
    To be more consistent, the order of the arguments (parameters) of the functions: sinh, cosh, tnah, switch1 and switch2 has been changed. The function cos1 has an additional parameter. One must edit the operator file, if one of those 1D-operators is used. See hamsym.ps or guide Appendix C.
    (HDM 06/03)
  • Several small bugs fixed: Bug in Makefile (expect), in npotlab (rewind), in adiabwkb.F (mtr->ftr) and in heinsort.F and htmsetup.F (j_p, j_m with c_p, c_m)
    (HDM,SS,CC 05/03)
  • Options of autospec83 (plspec) changed. Fourier-transform only (no energy prefactor) is now default. To invoke the energy prefactor give the option -EP.
    (HDM 05/03)
  • Coefficients (different from 1.0) allowed for natpots.
    Furthermore, one may give 'I' in the coefficient column, making the coefficient imaginary. Complex coefficients are not allowed , only real or pure imaginary. However, the program may sum real and imaginary coefficients.
    (HDM 05/03)
  • MCTDH can handle Fourier-Transformed (FT) natpot terms. (SS 04/03)
  • Fast algorithm can work with natpotcut.
    (SS 04/03)
  • Symmetry in interpolation of angular dofs in Chnpot has been added.
    (SS 04/03)
  • Input file may be run through C preprocessor (use -cpp option). This allows several input files to share any subsets of their settings.
    (AM 04/03)
  • Flux now also works when the CAP-DOF is within a combined mode.
    Rdcheck and crosspec now use less memory.
    Autospec now uses dynamical allocation of memory.
    (HDM 03/03)
  • New method for gridpop and spop calculation for dentype I: The trace of \rho^2 is used. This is useful for traceless \rho. The keyword is quadpop.
    (CC 03/03)
  • Bug fixed in dvrweights.f, a factor pi**0.25 was missing in the weights of the HO-DVR.
    Crosspec allows for automatic plotting (new option).
    Showd1d now knows the '-t' option (final time).
    New analyse routine probsq which computes the sum of the squared occupation probabilities of eigenstates.
    (HDM 02/03)
  • For dentype II calculations one may read in a initial wavefunction rather than a density operator.
    (CC 02/03)

Revision 1  (Nov 2002)  (Public: Jan 10, 2003)

  • Some additions to the Guide.
    Showsys improved (handling of menu).
    Bug fixed in density operator propagation using FFT.
    Keyword operate_no-norm added. This command removes the normalisation of operator*psi (or of -i[operator,rho]).
    Option -mnd (make name directory) added.
    Keywords expect1 and real-only added. (HDM 01/03)
  • H2O PES moved from wslfh.F to new (addsurf) file h2o.f   (HDM 01/03)
  • PJT2 Surface for H2O has been added. vho potential curve for OH has been added. (SS 01/03)
  • New analyse program Prhosub added. Prhosub reads pdensity file and writes reduced density of one selected DoF on primitive grid to files. (MN 12/02)
  • There is a new operator keyword   external1d{file}. A one-dimensional (diagonal) function may be defined by a set of points. These points are read form file file, interpolated and then treated as any other 1D-function (e.g. evaluated at the grid-points). (AM 11/02)
  • New feature "FT" in Potfit has been implemented. (SS 11/02)
  • Bug fixed in hnatfast. Fast algorithm was made more efficient for nmode ≥ 4. (Note: fast accelerates the multiplication natpot * A-vector). (SS 11/02)
  • New operators added (KLeg/PLeg only):   jp^2 and jm^2 , ( i.e. (j_+)^2, (j_-)^2 ). The symbol  |&  is introduced in the Hamiltonian-Section. It is equivalent to |k&l, where k and l are numbers. When using |& , k and l are determined by counting. Symbols like |&& and |&&& are similarly defined. For safety reasons, it is now forbidden to mix numbered (e.g. |1 or |4&5 ) with un-numbered (e.g. | or |& ) input within one line of the Hamiltonian-Section. (HDM 11/02)

Revision 0  (Sep-Oct 2002)  

  • Three new projectors for flux are implemented.  Leg,KLeg and PLeg . They project on j or on (j,m) states. (HDM 10/02)
  • New analyse program Chnpot has been implemented. Chnpot allows to map the natural potentials from one grid to another (usually from a coarse to a fine grid). (SS 10/02)
  • Automatic CAP (ACAP) can now be switched on after some time. This time is to be supplied as the 5th argument of ACAP. (HDM 10/02)
  • New keyword added: natpotcut. This removes all natural potential terms which are smaller than natpotcut. Default: natpotcut=1.d-8 (CC 10/02)
  • New potential surface tully.f added: CO on Cu. (CC 10/02)
  • New potential surface added: HCN. (FG 10/02)
  • The 1D operators cos, sin, tan now have two parameters. The default value for the second parameter is zero. See Built-in Symbols page 4. (FG 10/02)
  • Bug fixed in operator build-up for densities (dissipative part). Small terms were deleted inconsistently. Bug fixed in showpot. (It crashed when there were more than 1024*1024 grid-points). (CC 10/02)
  • Almost all potential energy surfaces (except lsth) are moved from $MCTDH_DIR/source/surfaces to the new directory addsurf. The script  mklinks creates links from surfaces to addsurf. (HDM 09/02)
  • Two new integrators have been added: Runge-Kutta order 5 (RK5) and order 8 (RK8) (FO 08/02)
  • MCTDH now has the ability to use external BLAS and LAPACK libraries instead of the self-compiled reference code. (FO 09/02)
  • The translation between Fortran and C symbols can now be configured in "compile.cnf" (via MCTDH_F2C_STYLE) (FO 09/02)
  • Bugfix: When performing exact propagations with an integrator other than SIL, the format of the "steps" file is changed slightly so that it can be processed with rdsteps (FO 09/02)

Version 8    Release 2

Revision 8  (Sep 2002)  (Public: Sep 12, 2002)
  • Three potential energy surfaces for H3O system: WSLFH, YZCL1 and YZCL2 have been implemented. (SS 09/02)
  • New External DVR (keyword extern) has been implemented. The grid points and DVR matrices are read here from file. (SS 09/02)
  • New 1D-function, exp(p*(cos(x)-p1))**r, implemented. (CC 09/02)
  • Bug in rdinpf (einglib.f) fixed (HDM 09/02)
  • There are four new DVR's : Lagu1 ... Lagu4. They are build from the Laguerre functions
    phi(n,x) = Sqrt( (n-1)!/(n+a-1)! ) * x^(a/2) * exp(-x/2) * L(n-1,a,x)
    with a = 1, 2, 3, 4. (HDM 08/02)
  • Analyse tool norm works now for density operators typ I. (CC 07/02)
  • Bug in the memory-allocation part of overlap.F fixed (density operators typ II). (CC 07/02)
  • The plot programs showsys82, showd1d82, showspf82, and showrst82 depict now the wavefunction and densities with the proper ordinate scale (i.e. independent of the number of grid-points). Using the no-weights option   -nw   (or, for showsys82, the menu point 290) one may switch to plotting the population of the DVR-points. (HDM 07/02)

Revision 7  (Jul 2002)  (Public: Jul 4, 2002)

  • Documentation overhauled. Validates as HTML 4.01 Transitional  W3C. (HDM 07/02)
  • Timing error in propcmfada.F fixed. (time -> localtime for second half step). (FO 07/02)

Revision 6  (Mar 2002)

  • flux82 can now work with left-hand sided CAPs. The last argument for flux should be left, right or both. The default is right. (HDM 06/02)
  • There are new 1D functions, which may be used to build an operator: cosh, sinh, tanh, switch1 and switch2. (HDM 05/02)
  • There are two new analyse routines di2ad82 and psi2ex82. psi2ex82 transforms a MCTDH wavefunction to exact format and di2ad82 transforms a WF from diabatic to adiabatic representation. To do so, the WF must be in exact format. (GAW 05/02)
  • Combining degrees of freedom which were represented by FFT did not always work correctly. Bug fixed. (GAW 05/02)
  • The analyse routine ortho82 now works also for density operators of type I and II. Overlap82 can now do overlaps between density operators of different type. (CC 04/02)
  • There is a new analyse routine diag82. It allows to compute eigenenergies by diagonalising the matrices generated with fmat82. (SS 04/02)
  • The program potfit82 can now generate combined natural potentials. (FG 03/02)
  • The plot program showsys82 can now do overlay plots. I.e. it can simultaneously plot two pictures, e.g. the contour lines of a potential and the wavepacket. (GAW 03/02)
  • The evaluation of the cross-correlation function, both with the analyse program crosscorr82 or "on-the-fly" using the keyword cross, now works also for density operators of type I and type II. (CC 03/02 and FO 03/02)
  • The script bashpath is updated. (HDM 03/02)
  • The evaluation of expectation values, both with the analyse program expect82 or "on-the-fly" using the keyword expect, now works also for density operators of type I and type II. (CC 02/02)
  • The mapping algorithm (keyword map in Init_WF-Section) has been improved. It now works also when the dummy grid is only part of the grid to which the SPF is to be mapped. (HDM 02/02)
  • The evaluation of coordinate expectation values is modified in case of a 2*Pi periodic grid. <sin(q)> and <cos(q)> are determined and <q> is set to arctan(<sin(q)>/<cos(q)>). Similar formulae apply for <dq> . (HDM 02/02)

Revision 5  (Feb 2002)  (Public: Feb 8, 2001)

  • The use of the eigenf keyword failed, when there were combined modes and more than one 1D operator in the requested Hamiltonian. Fixed. (HDM 02/02)
  • The fast algorithm (keyword fast in Integrator-Section) did not work for continuation runs. Fixed (HDM 02/02)
  • operate now works also for density-operators of type I and II. (CC 02/02).

Revision 4  (Jan 2002)

In addition to some small bug fixes/improvements of the code, corrections of and additions to the documentation and to the User's Guide, there are some more important bug fixes and improvements which are listed below.

  • The keyword cross has been added to the RUN-SECTION. It is used for calculating the cross-correlation function on the fly. See on-line docs for further details. (FO 01/02.)
  • There is a new keyword in the RUN-SECTION, orben. When orben is set, the so called orbital energies are computed and written to the orben file. See the on-line documentation and the User's Guide for further details. (HDM 01/02).
  • The A-coeff keyword has been implemented for densities type I and type II (CC 01/02).
  • It is now possible to apply several operators to the initial wavefunction, e.g.: "operate = O1, O2, O3"  (HDM 12/01).
  • The mctdh -o option has been re-newed. An op.log file is now printed to screen, but it is the op.log file before summation of the Hamiltonian terms is performed. (HDM 01/02).
  • The operators used with the eigenf keyword no longer requires an   S1&1  1D-operator for the electronic degree of freedom. See the documentation for details. (HDM 12/01).
  • The maximal line-length is enlarged from 80 to 160 characters when reading input files (*.inp, *.op, and *.srf). This is helpful when writing Hamiltonian-Sections. (HDM 12/01).
  • The improved relaxation, i.e relaxation to excited states, has been developed further. It is also better documented, (although not yet in final form). See on-line documentation and User's Guide, (HDM 12/01).
  • The single particle functions generated by diagonalising a 1D Hamiltonian (eigenf keyword) now obey a phase convention. When diagonalising a harmonic potential, one now obtains the harmonic oscillator functions with correct signs. (HDM 11/01).
  • There are two new keywords map and addmode.  map is used in the Init_WF-Section and copies the SPF's of one DOF to another. (Grids must be the same, of course).  addmode, used in a Hamiltonian-Section, allows to add a mode which is not specified in the SPF-Basis-Section. These keywords are useful when one wants to propagate with FFT but needs initial SPF's generated by eigenf. (HDM 10/01).

Revision 3  (Sep 2001)  (Public: Sep 18, 2001)

In addition to some small bug fixes, corrections of the documentation, and other small improvements, there are some more important bug fixes (listed below) and two new analyse routines.

  • There are new analyse programs: statepop (called by analysis82) (GAW 07/01) and fmat82 (HDM 08/01). fmat82 computes <psi(t1)|O|psi(t2)> , where O is an operator (can be the unit operator) in MCTDH form.
  • Bug fixed in heinsort.F, the keyword analytic_pes now applies only to the system hamiltonian. (CC 07/01). Bug fixed in transmf.F, diabatic correction now possible for nstate > 1. (HDM 07/01). Energy output for exact relaxation corrected. (GAW 08/01). Bug fixed in heinsort.F, the electronic Z-matrix is now correctly duplicated for multi-packet runs. (HDM 09/01).
  • Bugs in plotutils.F fixed so that showsys works with combined modes. (GAW 07/01).
  • Bug in flux fixed so that flux now works again correctly when using projectors. (HDM 07/01).
  • Parameters may now carry a unit when defined via the -p option. (HDM 09/01).

Revision 2  (Jul 2001)  (Public: Jul 2, 2001)

In addition to several small bug fixes, there are two new features: a two-dimensional Legendre DVR (PLeg) and "relaxation" to excited states.

  • There are new analyse programs: crosscorr, crosspec, and vminmax. (HDM 04/01, 06/01)
  • A bug concerning the time coordinate (heinterm.F) has been fixed. (GAW 04/01)
  • A bug in the generation of multi-dimensional operators has been fixed. (SS 04/01)
  • The operator label dq did not work properly for FFT. Bug fixed. (HDM 05/01)
  • The compile script has been changed. The available multi-dimensional potential energy surfaces are no longer automatically linked. One has to use the -i option to link a desired surface to the potfit or mctdh program. (HDM 05/01)
  • There are now reasonable error messages when the input for a build-up of an operator is incorrect. (HDM 05/01)
  • A new keyword, periodic, is introduced in the Init_WF-Section. This allows to place an initial gaussian properly across a periodic boundary. (HDM 05/01)
  • The expectation values <q> and variances <dq> are now written to the check-file and may be plotted with the aid of the script plqdq. (CC 04/01)
  • The keyword relaxation may now carry an integer argument. relaxation=n will generate the n-th eigenstate. (See "Input-Documentation/Run-section"). However, as the method is based on the Lanczos algorithm, the method may converge to a higher eigenstate as requested. relaxation and relaxation=0 both converge towards the ground state, but relaxation=0 in general is much faster. (HDM 05/01)
  • There is a new two-dimensional DVR, PLeg. It is a non-separable DVR based on the spherical harmonics Yjm . It is similar in function to the sphFBR, but it is a proper DVR. (SS 06/01)
  • The dependencies on the include files as listed in the Makefile are now generated by the script mkdepend. Hopefully, they are now all correct and the -a or -A options of compile are now needed only very rarely. (HDM 06/01)
  • The dummy potential energy surface mysrf was added. This makes it fairly easy to include a new surface, as long as this surface does not depend on special parameters. (HDM 06/01)
  • The Elk-Test is updated and two new tests are added. (CC 06/01)

Revision 1 Patch 1  (Public: Jan 29, 2001)

The following bug-fixes and changes become effective after the patch:

  • A bug in the treatment of time-dependent operators has been fixed. (GAW 01/01)
  • Product of operators, like cos*dq have not always been correctly treated. Bug fixed. (HDM 01/01)
  • The showpot82 program displayed a Vfit when being asked to display a Vpot, and vice versa. Bug fixed. (HDM 01/01)
  • The program showpot82 now knows more options. (See showpot82 -h ). (HDM 01/01)

Revision 1  (Jan 2001)  (Public: Jan 17, 2001)

The following new features have been added:

  • The defaults for creating output-files have been changed. The files output, timing, speed, update and stop are now opened by default. (update is, of course, only opened when CMF integration is used.) If you do not want these files give the keyword screen, no-timing, no-speed, no-update or no-stop.(HDM 01/01)
  • The handling of numbers in exponential form is improved. Previously a parameter definition like: par1 = par2*2.3d-5 failed, because the program tried to subtract 5 from the (unknown) parameter 2.3d. Numbers in exponential form are now correctly identified, however, the exponent must be indicated by a d. In particular 2.3D-5, 2.3e-5 and 2.3E-5 are invalid! (HDM 01/01)

Two bugs have been fixed:

  • Hamiltonian parameters close to 1 were erroneously set to 1. In some cases that may have lead to a (slightly) wrong operator. (HDM 01/01)
  • When potfit was run with the keyword direct = 1, then the separable weights of the contracted mode were not correctly treated. (HDM 01/01)

Revision 0  (Dec 2000)  (Public: Dec 17, 2000)

The DMCTDH programs have now been incorporated into the MCTDH program, and propagation of either density operators or wavefunctions is achieved by using the relevant keywords.

The S-MCTDH method (Worth JCP (2000) 112:8322), which tries to reduce computational resources by including only a selection of the configurations, is now included in a provisional form. Many of the ANALYSE programs, however, are unable to deal with wavefunctions of this form.

There are a number of new ANALYSE programs including:

  • showsys    
 Allows plotting of 2D cuts of the wavefunction, 2D densities, 2D cuts of the PES. The old showpes program has been incorporated into this program.
  • expect    
 Evaluates the time-evolution of an operator expectation value.
  • pexpect    
 Evaluates the time-evolution of a particle (separable) operator expectation value.

The following new features have been added:

  • There is a new menu-driven interface for the analyse programs, and interactive plotting capabilities have been added to some routines. (GAW 11/00)
  • Time-dependent operators can be treated. (GAW 10/00)
  • The -pes option can be used in place of the genpes keyword. (HDM 10/00)
  • The complete single-particle density can be output and used to evaluate the expectation value of separable operators. (HDM 10/00)
  • Expectation values of a pre-defined operator can be calculated on-the-fly during a propagation. (CC 10/00)
  • An operator file oper_S can be generated after a propagation using the keyword genoper = S. This can then be used to evaluate expectation values using the EXPECT program. (GAW 9/00)
  • A pes file can be generated using the genpes keyword or, alternatively, by using the -pes option. This file can then be used to plot the potential energy surface. (GAW 8/00)
  • An operator can be applied to the initially generated wavepacket before propagation. (GAW 8/00)
  • The analyse routine flux has been enlarged substantially. The use of operators for computing averaged energy transfers and the use of projectors for determining the flux into specified quantum states is now possible. (HDM 11/00)

Other significant changes are as follows:

  • A usediag/nodiag keyword has been introduced to control whether the diag flag is used when building an operator. (GAW 10/00)
  • The symmetry of operators is now correctly accounted for (previously assumed that all operators are hermitian). (GAW 10/00)
  • Operator log now always written to file op.log (HDM 10/00)

Various minor bugs have also been fixed and code changes made. These include:

  • Bug in ABM integrator that occasionally led to very small steps. (HDM 11/00)
  • Bug for FBR operators fixed. (GAW 8/00)

Version 8    Release 1

Revision 9  (Jul 2000)  (Public: Jul 5, 2000)

In addition to updates in the documentation and users guide, the filter diagonalisation programs of Michael Beck have been added. The DMCTDH programs of Andreas Raab, which propagate density matrices using the MCTDH formalism, have also been added to the project. They are as yet undocumented, and not for the novice!

The following new features have also been added:

  • The "normstop" option is added to stop a propagation if the norm drops below a given value. (SS 5/00)
  • A "fast" algorithm for evaluating natural potential operators is added (SS 5/00)
  • For SPHFBR, the operators "jz" and "jz^2" have been added (HDM 5/00)
  • An exact run no longer needs an SBASIS-SECTION (HDM 4/00)
  • New DVR implemented. Restricted Legendre DVR : Leg/R (HDM 4/00)
  • New unit 'aJ' (= 10^-18 Joule) (MB 3/00)
  • Can select only odd or only even HO functions as initial SPFs (GAW 2/00)
  • Can select different SPF parameters for different sets in a multi-set calculation (GAW 2/00)
  • Operator file for CO2 added (MB 3/00)

Other significant changes are as follows:

  • For SPHFBR, the operator "KE" is renamed "j^2" (HDM 5/00)
  • Some ANALYSE programs have been renamed (HDM 3/00)
    • plpot -> showpot
    • rdden1d -> showd1d
    • rdspf -> showspf
    • rdrstspf -> showrst
  • Path names given in input-files are now interpreted relative to the path of the input-file, and not relative to pwd. (HDM 3/00)

Various bugs have also been fixed, and minor code changes made. These include:

  • Bug when relaxation + exact + BS integrator (GAW 6/00)
  • Bug in power operation in LABELS-SECTION (GAW 6/00)
  • Bugs in showd1d. (HDM 5/00)
  • Order of summing / sorting operator terms changed. (GAW 5/00)
  • Bugs in FBR routines. (GAW 5/00)
  • Bug in morse operator. (GAW 5/00)
  • Operators "dq" and "p" were not correctly used (MB 3/00)
  • The summation of operator terms changed so that terms differing only in the coefficients are summed. (GAW 3/00)
  • Orthonormalisation procedure of the spf's changed (HDM 3/00)
  • Bug in generation of multi-dimensional operators (GAW 3/00)
  • Bug with keyword "angst-1" (MB 3/00)
  • Bug with operators "dth1" and "dth2" (MB 3/00)

Revision 6  (Feb 2000)  (Public: Feb 28, 2000)

This Revision was the first distributed package. The User's Guide was started, and a user friendly installation procedure was introduced. The POTFIT program has been thoroughly overhauled by Stefan Wefing.

In addition to updates in the documentation, the following new features have been added:

  • An exact propagation can start from an MCTDH wavefunction (GAW 12/99 )
  • FBR integrals work for a general operator (GAW 11/99)
  • "veigen" keyword to write the eigenvalues and functions of a 1D-operator to a file (GAW 11/99)
  • PARAMETER-SECTION can be read from .inp file. The parameters can the be used for input. (GAW 11/99)
  • Possibility of diagonalising a user-defined 1D Hamiltonian for the generation of the initial SPFs: "eigenf" (GAW 11/99)

Various bugs have also been fixed, and minor code changes made. These include:

  • The generation of multi-dimensional operators changed, so that operators do not need to span entire system (partial-system operators) (GAW 12/99 )
  • Changes made to summation of operator terms (GAW 11/99)
  • Changes made to generation of initial wavefunction (GAW 11/99)
  • Calculation of energy distribution for (a)diabatic correction changed (SS 11/99)
  • Terms in the Hamiltonian with a zero coefficient are deleted (GAW 11/00)

Changes in Version 8.0  (Jan 1999)

The following changes of the MCTDH code with respect to the preceding version have been made.
The whole program was restructured and made more modular. The MCTDH main program now calls four major routines - rundvr, runoper, runinwf and runpropwf - which are quite independent from each other. They build the DVR's, the operator, the initial wave function and perform the propagation.
The following new features have been added.

  • Numerically exact propagations can be performed. (GAW 9/98)
  • The multi-packet propagation was implemented. (MB 10/98)
  • Cross-correlation matrices can be computed. (MB 3/99)
  • Lanczos diagonalisation routine implemented. (MB 5/99)
  • Excited single-particle functions can be populated in the initial wavefunction. (MB 5/99)

Changes in Version 7.1  (Jan 1988)

The following changes of the MCTDH code with respect to the preceding version have been made.

  • An error estimate of the auto-correlation function was introduced. (AR 2/98)
  • An automatic program test has been written. (GAW 4/98)
  • Higher-order auto-correlation functions were implemented. (MB 4/98)

Changes in Version 7.0

The following changes of the MCTDH code with respect to the preceding version have been made.

  • A new input format using keywords has been implemented. (GAW 7/97)
  • A new operator format based on keywords has been implemented. (GAW 7/97)
  • Dynamical allocation is now possible. (HDM 7/97)
  • The error estimate for the Lanczos-Arnoldi integrator was improved. (MB 7/97)
  • An exponential DVR has been implemented. (HDM 9/97)
  • An FBR representation of spherical harmonics has been established. (MCH 11/97)

Changes in Version 6.4

The following changes of the MCTDH code with respect to the preceding version have been made.

  • The CMF step size can now be controlled using an error estimate of the single-particle functions only. (MB 2/97)
  • In a CMF calculation the autocorrelation function can now additionally be written to file in the middle between two outputs. (MB 2/97)

Changes in Version 6.3

The following changes of the MCTDH code with respect to the preceding version have been made.

  • The CMF method now allows adaptive step sizes. (MB 11/96)
  • The combination of interaction picture and CAPs has been implemented. (GAW 11/96)

Changes in Version 6.2

The following major changes of the MCTDH code with respect to the preceding version have been made.

  • Sine DVR has been implemented. (AJ 10/96)
  • A Lanczos-Arnoldi integrator has been implemented. (MB 10/96)

Changes in Version 6.1

The following major changes of the MCTDH code with respect to the preceding version have been made.

  • CDVR has been implemented. (GAW 9/96)
  • Products of single-particle operator matrices and mean-field matrices are now summed up for potential terms. (MB 10/96)