367 citations · 5.1k across the 138 of their papers we have counts for
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Two trapped particles interacting by a finite-ranged two-body potential in two spatial dimensions
Rostislav A. Doganov, Shachar Klaiman, Ofir E. Alon +2
We examine the problem of two particles confined in an isotropic harmonic trap, which interact via a finite-ranged Gaussian-shaped potential in two spatial dimensions. We derive an…
Exact quantum dynamics of bosons with finite-range time-dependent interactions of harmonic type
Axel U. J. Lode, Kaspar Sakmann, Ofir E. Alon +2
The exactly solvable quantum many-particle model with harmonic one- and two-particle interaction terms is extended to include time-dependency. We show that when the external trap p…
Universality of Fragmentation in the Schrödinger Dynamics of Bosonic Josephson Junctions
Kaspar Sakmann, Alexej I. Streltsov, Ofir E. Alon +1
The many-body Schrödinger dynamics of a one-dimensional bosonic Josephson junction is investigated for up to ten thousand bosons and long times. The initial states are fully conden…
Dynamics and symmetries of a repulsively bound atom pair in an infinite optical lattice
Andreas Deuchert, Kaspar Sakmann, Alexej I. Streltsov +2
We investigate the dynamics of two bosons trapped in an infinite one-dimensional optical lattice potential within the framework of the Bose-Hubbard model and derive an exact expres…
How does an interacting many-body system tunnel through a potential barrier to open space?
Axel U. J. Lode, Alexej I. Streltsov, Kaspar Sakmann +2
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 alpha-decay, fusion and fission i…
Wave chaos as signature for depletion of a Bose-Einstein condensate
Iva Brezinova, Axel U. J. Lode, Alexej I. Streltsov +3
We study the expansion of repulsively interacting Bose-Einstein condensates (BECs) in shallow one-dimensional potentials. We show for these systems that the onset of wave chaos in…
Excitation spectra of fragmented condensates by linear response: General theory and application to a condensate in a double-well potential
Julian Grond, Alexej I. Streltsov, Ofir E. Alon +1
Linear response of simple (i.e., condensed) Bose-Einstein condensates is known to lead to the Bogoliubov- de Gennes equations. Here, we derive linear response for fragmented Bose-E…