Curriculum Vitae (
download PDF: CV_Streltsov.pdf)

PD Dr. Rer. Nat. Alexej I. Streltsov

Personal Data:


Alexej Iwanowitsch Streltsov

Date and place of birth

04 July 1974 in Vladivostok (Russia)

Home address

D-69123 Germany, Heidelberg, Im Dörning 28

Home phone

cell phone



Marital Status

Married (Olessia) + son(Pawel)




Head of the “Many-Body Theory of Bosons” group at CQD, Heidelberg University; Principal architect of the MCTDHB project (package); Leader of the MCTDHB-Laboratory a cross-platform scientific environment to learn and study quantum many-body dynamics

Personal description:

I did manage to transform a bright theoretical idea to a final high-tech scientific product – MCTDHB-Laboratory:

This is the result of effective inter-communications and inter-actions of many involved people, whom I have coherently driven towards the final result.

Scientific records: (from Web of Knowledge May 2015)

Total number of Publications 60: 1 PNAS, 8 PRL, 30 PRA, …;

Times Cited: 1068; Average Citations per Article: 16.93; h-index: 19

Contact Information:

Work phone:

+49 6221 54 52 09

Work Fax:

+49 6221 54 52 21

Work address:

Theoretische Chemie Physikalisch-Chemisches Institut Im Neuenheimer Feld 229, D-69120 Heidelberg, Germany


Personal Web-page:

MCTDHB-project Web-page:

MCTDHB-Laboratory Web-portal:


1991 – 1996

Graduate studies of Physics at the Far Eastern State University, Vladivostok, Russia

1996 – 1999

Postgraduate studies of Physics at the Far Eastern State University, Vladivostok, Russia

1999 – 2000

Advanced studies at the University of Heidelberg, Germany

2000 – 2005

Ph.D student at the Physical Chemistry Institute, University of Heidelberg, Germany. Title: Inter- and Intra-atomic processes accompanying core-ionization of atomic and molecular clusters (diss.pdf)

2005 – 2010

Post-doctoral fellow at the Physical Chemistry Institute, University of Heidelberg, Germany

2011 – 2012

Habilitation at the Faculty of Physics and Astronomy, University of Heidelberg, Germany. Title: Interplay between Fragmentation and Condensation in static and highly non-equilibrium dynamic processes in ultracold bosonic clouds:Novel phenomena, new understanding and future perspectives (habil.pdf 17MB)

Professional Experience:

1993 – 1996

Engineer, Laboratory of Optical Spectroscopy, Far Eastern State University, Vladivostok, Russia

1996 – 1999

Junior Research Associate, Laboratory of Electronic Spectroscopy, Far Eastern State University, Vladivostok, Russia

2000 – 2006

Research Associate, “Theoretical Chemistry Group”, Physical Chemistry Institute, University of Heidelberg, Germany

2006 – 2010

Scientific Researcher, “Theoretical Chemistry Group”, Physical Chemistry Institute, University of Heidelberg, Germany

2010 – present

Head of the “Many-Body Theory of Bosons groupat the “Center for Quantum Dynamics, University of Heidelberg, Germany

Honors and Awards:


G. Soros Foundation grant for students


Student scholarship of the President of the Russian Federation (diploma N.22)


Diploma in Physics of the Far Eastern State University, Graduated with honors


Scholarship of the DAAD (German Academic Exchange Service)


Scholarship of the Dr. Sophie-Bernthsen Foundation

Fields of scientific expertise:

Scientific and Research Interests:

·        Highly non-equilibrium quantum many-body dynamics

·        Bosons: Bose-Einstein Condensates:

o       Static and dynamic properties of the ground and excited states

o       Fragmentation, fermionization, phase transitions

o       Many-body effects and their description beyond standard mean-fields

·        Multi-component quantum systems:

o       Bose-Bose, Bose-Fermi, Fermi-Fermi mixtures

o       Conversion between particles: How to?

·        Quantum Theories of Many-Particle Fermionic, Bosonic and mixed Systems

o       Ab initio methods and computational techniques in modern Physics and Quantum Chemistry

o       Variational principles in quantum many-body theories

o       Numerical solutions of multi-dimensional non-linear integro-differential equations

·        Fermions: Atoms, Molecules and Clusters

o       Properties of the ground and highly excited states

o       Inter- and intra-atomic (molecular) processes accompanying ionization and excitation

Packages created: MCTDHB-Laboratory (2015), original MCTDHB package (2005-present)

MCTDHB-Laboratory is a scientific cross-platform (Win/Mac/Linux) environment with a mouse-click interface designed to solve Time-Dependent Schrödinger Equation for bosons based on Multi-Configurational Time-Dependent Hartree for Bosons method It solves coupled systems of non-linear integro-differential time-dependent equations by utilizing different combinations of massive (MPI, OpenMP, CUDA) parallelization schemes. MCTDHB-Lab allows to analyze and visualize the solutions obtained. Two modifications of the MCTDHB-Lab are available: a serial version ready-to-use on standard desktops and a professional version designed for super-computers – it supports all parallelization schemes and includes additional tools, e.g., source-codes for package development

Teaching Experience:

Complete List of Publication

Bose-Einstein Condensation and Ultra-cold atoms

  1. Quantum Many-Body Dynamics of Trapped Bosons with the MCTDHB Package: Towards New Horizons with Novel Physics: in High Performance Computing in Science and Engineering '14: Transactions of the High Performance Computing Center, Stuttgart (HLRS) 2014, edited by W. E. Nagel, D. H. Kröner, M. M. Resch (Springer, Heidelberg, 2015).

  2. Breaking the resilience of a two-dimensional Bose-Einstein condensate to fragmentation: Phys. Rev. A 90, 043620 (2014). arXiv:1409.0323

  3. Generic regimes of quantum many-body dynamics of trapped bosonic systems with strong repulsive interactions: Phys. Rev. A 89, 061602(R) (2014). arXiv:1312.6174

  4. Controlling the velocities and the number of emitted particles in the tunneling to open space dynamics: Phys. Rev. A 89, 053620 (2014). arXiv:1309.4253

  5. Universality of fragmentation in the Schrödinger dynamics of bosonic Josephson junctions: Phys. Rev. A 89, 023602 (2014). arXiv:1207.1011

  6. Unified view on linear response of interacting identical and distinguishable particles from multiconfigurational time-dependent Hartree methods: J. Chem. Phys. 140, 034108 (2014). arXiv:1309.1893

  7. Elastic scattering of a Bose-Einstein condensate at a potential landscape: J. Phys.: Conf. Ser. 488, 012032 (2014). arXiv:1310.0622

  8. Numerically-Exact Schrödinger Dynamics of Closed and Open Many-Boson Systems with the MCTDHB Package: in High Performance Computing in Science and Engineering '13: Transactions of the High Performance Computing Center, Stuttgart (HLRS) 2013, edited by W. E. Nagel, D. H. Kröner, M. M. Resch (Springer, Heidelberg, 2013).

  9. Quantum systems of ultracold bosons with customized interparticle interactions: Phys. Rev. A 88, 041602(R) (2013). arXiv:1307.5187

  10. Excitation spectra of many-body systems by linear response: General theory and applications to trapped condensates: Phys. Rev. A 88, 023606 (2013). arXiv:1307.1667

  11. Two trapped particles interacting by a finite-range two-body potential in two spatial dimensions: Phys. Rev. A 87, 033631 (2013). arXiv:1210.6701

  12. Multiconfigurational Time-Dependent Hartree Methods for Bosonic Systems: Theory and Applications, in Quantum Gases: Finite Temperature and Non-Equilibrium Dynamics (Vol. 1 Cold Atoms Series), edited by N. P. Proukakis, S. A. Gardiner, M. J. Davis, and M. H. Szymanska (Imperial College Press, London, 2013), pp. 147-157.

  13. Excitation spectra of fragmented condensates by linear response: General theory and application to a condensate in a double-well potential: Phys. Rev. A 86, 063607 (2012). arXiv:1201.0714

  14. Numerically exact quantum dynamics of bosons with time-dependent interactions of harmonic type: Phys. Rev. A 86, 063606 (2012). arXiv:1207.5128

  15. Dynamics and symmetries of a repulsively bound atom pair in an infinite optical lattice: Phys. Rev. A 86, 013618 (2012). arXiv:1202.4111

  16. How an interacting many-body system tunnels through a potential barrier to open space: Proc. Natl. Acad. Sci. USA 109, 13521 (2012). arXiv:1202.3447

  17. Wave chaos as signature for depletion of a Bose-Einstein condensate: Phys. Rev. A 86, 01103 (2012). arXiv:1202.5869

  18. Recursive formulation of the multiconfigurational time-dependent Hartree method for fermions, bosons and mixtures thereof in terms of one-body density operators: Chem. Phys. 401, 2 (2012).

  19. Number fluctuations of cold, spatially split bosonic objects: Phys. Rev. A 84, 053622 (2011). arXiv:1108.3276

  20. Swift Loss of Coherence of Soliton Trains in Attractive Bose-Einstein Condensates: Phys. Rev. Lett. 106, 240401 (2011). arXiv:1012.0334

  21. Accurate multi-boson long-time dynamics in triple-well periodic traps: Phys. Rev. A 83, 043604 (2011). arXiv:0910.5916

  22. Optimal time-dependent lattice models for nonequilibrium dynamics: New J. Phys. 13, 043003 (2011). arXiv:1006.3530

  23. Fragmented many-body states of definite angular momentum and stability of attractive three-dimensional condensates: Phys. Rev. A 82, 033613 (2010). arXiv:1004.3954

  24. Quantum dynamics of attractive versus repulsive bosonic Josephson junctions: Bose-Hubbard and full-Hamiltonian results: Phys. Rev. A 82, 013620 (2010). arXiv:0911.4661

  25. General mapping for bosonic and fermionic operators in Fock space: Phys. Rev. A 81, 022124 (2010). arXiv:0910.2577

  26. Exact quantum dynamics of a bosonic Josephson junction: Physical Review Letters Volume 103, 220601 (2009). arXiv:0905.0902

  27. Scattering of an attractive Bose-Einstein condensate from a barrier: Formation of quantum superposition states: Phys. Rev. A 80, 043616 (2009). arXiv:0812.3573 (see also: Virtual Journal of Atomic Quantum Fluids -- November 2009)

  28. Efficient generation and properties of mesoscopic quantum superposition states in an attractive Bose–Einstein condensate threaded by a potential barrier: J. Phys. B: At. Mol. Opt. Phys. 42, 091004 (2009).

  29. Exact decay and tunneling dynamics of interacting few boson systems: J. Phys. B: At. Mol. Opt. Phys. 42, 044018 (2009); see also a corrigendum for this article 2010 J. Phys. B: At. Mol. Opt. Phys. 43 029802.

  30. The Multiconfigurational Time-Dependent Hartree Method for Identical Particles and Mixtures Thereof in Multidimensional Quantum Dynamics: MCTDH Theory and Applications edited by H.-D. Meyer, F. Gatti, G. A. Worth, (Wiley-VCH, Weinheim, 2009).

  31. Build-up of coherence between initially-independent subsystems: The case of Bose–Einstein condensates: Physics Letters A Volume 373, 301 (2009). arXiv:0712.3955

  32. Reduced density matrices and coherence of trapped interacting bosons: Phys. Rev. A 78, 023615 (2009). arXiv:0802.3417

  33. Many-body theory for systems with particle conversion: Extending the multiconfigurational time-dependent Hartree method: Phys. Rev. A 79, 022503 (2008). arXiv:0811.3853

  34. Formation and Dynamics of Many-Boson Fragmented States in One-Dimensional Attractive Ultracold Gases: Physical Review Letters, Volume 100, 130401 (2008). arXiv:0711.2778

  35. Fragmented Metastable States Exist in an Attractive Bose-Einstein Condensate for Atom Numbers Well above the Critical Number of the Gross-Pitaevskii Theory: Physical Review Letters, Volume 100, 040402 (2008). arXiv:0705.1802

  36. Multiconfigurational time-dependent Hartree method for bosons: Many-body dynamics of bosonic systems: Phys. Rev. A 77, 033613 (2008). arXiv:cond-mat/0703237

  37. Unified view on multiconfigurational time-propagation for systems consisting of identical particles: J. Chem. Phys. 127, 154103 (2007).

  38. Role of Excited States in the Splitting of a Trapped Interacting Bose-Einstein Condensate by a Time-Dependent Barrier: Physical Review Letters, Volume 99, 030402 (2007). arXiv:cond-mat/0612616

  39. Multiconfigurational time-dependent Hartree method for mixtures consisting of two types of identical particles: Phys. Rev. A 76, 062501 (2007).

  40. Multiorbital mean-field approach for bosons, spinor bosons, and Bose-Bose and Bose-Fermi mixtures in real-space optical lattices: Phys. Rev. A 76, 013611 (2007). arXiv:cond-mat/0612170

  41. Interferences in the Density of Two Bose-Einstein Condensates Consisting of Identical or Different Atoms: Physical Review Letters, Volume 98, 110405 (2007). arXiv:cond-mat/0701277

  42. Time-dependent multi-orbital mean-field for fragmented Bose–Einstein condensates: Physics Letters A 362, 453 (2007). arXiv:cond-mat/0607490

  43. Demixing of Bosonic Mixtures in Optical Lattices from Macroscopic to Microscopic Scales: Physical Review Letters 97, 230403 (2006). arXiv:cond-mat/0605140

  44. Coupled-cluster theory for bosons in rings and optical lattices: J. Mol. Struct., (Theochem) 768, 151 (2006).

  45. General variational many-body theory with complete self-consistency for trapped bosonic systems: Phys. Rev. A 73, 063626 (2006). arXiv:cond-mat/0603212

  46. Coupled-cluster theory for systems of bosons in external traps: Phys. Rev. A 73, 043609 (2006). arXiv:cond-mat/0511430

  47. Fragmentation of Bose–Einstein condensates in multi-well three-dimensional traps: Physics Letters A, Volume 347, 88 (2005).

  48. Zoo of Quantum Phases and Excitations of Cold Bosonic Atoms in Optical Lattices: Physical Review Letters, Volume 95, 030405 (2005). arXiv:cond-mat/0412734

  49. Exact ground state of finite Bose-Einstein condensates on a ring: Phys. Rev. A 72, 033613 (2005). arXiv:cond-mat/0505323

  50. Properties of fragmented repulsive condensates: Phys. Rev. A 71, 063612 (2005). arXiv:cond-mat/0412222

  51. Interacting fermions and bosons with definite total momentum: Phys. Rev. B 71, 125113 (2005). arXiv:quant-ph/0406095

  52. Ground-state fragmentation of repulsive Bose-Einstein condensates in double-trap potentials: Phys. Rev. A 70, 053607 (2004). arXiv:cond-mat/0407516

  53. Self-consistent fragmented excited states of trapped condensates: Phys. Rev. A 70, 023610 (2004). arXiv:cond-mat/0310699

  54. Continuous configuration-interaction for condensates in a ring: Europhysics Letters, Volume 67 (1), 8 (2004). arXiv:cond-mat/0402626

  55. Best mean-field for condensates: Physics Letters A, Volume 318, 564 (2003). arXiv:cond-mat/0310697

    Submitted, unpublished:

  56. Interferences in the density of two initially independent Bose-Einstein condensates: arXiv:cond-mat/0701277

  57. Interferometry with correlated matter-waves: arXiv:1412.4049

  58. Quantum Speed Limit and Optimal Control of Many-Boson Dynamics: arXiv:1412.6142

Inter- and intra-atomic processes accompanying core-ionization of clusters

  1. Charge transfer effects in molecule-negative ion complexes induced by core ionization: The Journal of Chemical Physics, Vol 119 (6), 3051 (2003).
  2. Strong interatomic effects accompanying core ionization of atomic clusters: Physical Review A, Volume 65, 023203 (2002).
  3. Core-ionized states and spectra of Be and Mg dimers: Physical Review A, Volume 65, 022501 (2002).
  4. Foreign and native coordination effects in core-level spectra of mixed Be-Mg clusters: The Journal of Chemical Physics, Volume 117(8), 3533 (2002).
  5. Strong charge-transfer effects in the Mg 2p-1 core-level spectrum of :MgB2Physical Review B, Volume 66, 165103 (2002). arXiv:cond-mat/0205433
  6. Interatomic response to core ionization of atomic clusters: Chemical Physics Letters, Volume 339, 263 (2001).
  7. The electron relaxation and UP spectra of metal coordination compounds: Journal of Electron Spectroscopy and Related Phenomena, Volume 96, 141 (1998).
  8. Photoelectron Spectroscopy of Transition Metal Complexes. Effect of Electron Relaxation On Spectrum Informativity: (in Russian) Journal of Structural Chemistry, T39, N6, 1113 (1998).

Contributions to Conferences

Bose-Einstein Condensation and Ultra-cold atoms

Inter- and intra-atomic processes accompanying core-ionization of clusters