Author pages are created from data sourced from our academic publisher partnerships and public sources.

- Publications
- Influence

Multiconfigurational time-dependent Hartree method for bosons: Many-body dynamics of bosonic systems

- O. E. Alon, A. I. Streltsov, L. Cederbaum
- Physics
- 9 March 2007

The evolution of Bose-Einstein condensates is amply described by the time-dependent Gross-Pitaevskii mean-field theory which assumes all bosons to reside in a single time-dependent one-particle state… Expand

Unified view on multiconfigurational time propagation for systems consisting of identical particles.

- O. E. Alon, A. I. Streltsov, L. Cederbaum
- Physics, Medicine
- The Journal of chemical physics
- 21 October 2007

We show that the successful and formally exact multiconfigurational time-dependent Hartree method (MCTDH) takes on a unified and compact form when specified for systems of identical particles (MCTDHF… Expand

Role of excited states in the splitting of a trapped interacting Bose-Einstein condensate by a time-dependent barrier.

- A. I. Streltsov, O. E. Alon, L. Cederbaum
- Physics, Medicine
- Physical review letters
- 24 December 2006

An essentially exact approach to compute the wave function in the time-dependent many-boson Schrödinger equation is derived and employed to study accurately the process of splitting a trapped… Expand

Formation and dynamics of many-boson fragmented states in one-dimensional attractive ultracold gases.

- A. I. Streltsov, O. E. Alon, L. Cederbaum
- Physics, Medicine
- Physical review letters
- 1 April 2008

The dynamics of attractive ultracold bosonic clouds in one dimension is studied by solving the many-particle time-dependent Schrödinger equation. The initially coherent wave packet can dynamically… Expand

Swift loss of coherence of soliton trains in attractive Bose-Einstein condensates.

- A. I. Streltsov, O. E. Alon, L. Cederbaum
- Physics, Medicine
- Physical review letters
- 1 December 2010

Experiments on ultracold attractive Bose-Einstein condensates (BECs) have demonstrated that at low dimensions atomic clouds can form localized objects, propagating for long times without significant… Expand

General mapping for bosonic and fermionic operators in Fock space

- A. I. Streltsov, O. E. Alon, L. Cederbaum
- Physics
- 14 October 2009

In this article, we provide an alternative and general way to construct the result of the action of any particle-conserving bosonic or fermionic operator represented in second quantized form on a… Expand

Numerically exact quantum dynamics of bosons with time-dependent interactions of harmonic type

- A. Lode, K. Sakmann, O. E. Alon, L. Cederbaum, A. I. Streltsov
- Physics
- 21 July 2012

The exactly solvable quantum many-particle model with harmonic one- and two-particle in- teraction terms is extended to include time-dependency. We show that when the external trap potential and… Expand

How an interacting many-body system tunnels through a potential barrier to open space

- A. U. J. Lode, A. I. Streltsov, K. Sakmann, O. E. Alon, L. Cederbaum
- Physics, Medicine
- Proceedings of the National Academy of Sciences
- 15 February 2012

The tunneling process in a many-body system is a phenomenon which lies at the very heart of quantum mechanics. It appears in nature in the form of α-decay, fusion and fission in nuclear physics, and… Expand

Reduced density matrices and coherence of trapped interacting bosons

- Kaspar Sakmann, Alexej I. Streltsov, Ofir E. Alon, Lorenz S. Cederbaum
- Physics
- 8 August 2008

The first- and second-order correlation functions of trapped interacting Bose-Einstein condensates are investigated numerically on a many-body level from first principles. Correlations in real space… Expand

Exact ground state of finite Bose-Einstein condensates on a ring (14 pages)

- K. Sakmann, A. I. Streltsov, O. E. Alon, L. Cederbaum
- Physics
- 12 May 2005

The exact ground state of the many-body Schr\"odinger equation for $N$ bosons on a one-dimensional ring interacting via a pairwise $\ensuremath{\delta}$-function interaction is presented for up to 50… Expand