Breaking the resilience of a two-dimensional Bose-Einstein condensate to fragmentation
Quantum Gases
2014-10-21 v1 Quantum Physics
Abstract
A two-dimensional Bose-Einstein condensate (BEC) split by a radial potential barrier is investigated. We determine on an accurate many-body level the system's ground-state phase diagram as well as a time-dependent phase diagram of the splitting process. Whereas the ground state is condensed for a wide range of parameters, the time-dependent splitting process leads to substantial fragmentation. We demonstrate for the first time the dynamical fragmentation of a BEC despite its ground state being condensed. The results are analyzed by a mean-field model and suggest that a large manifold of low-lying fragmented excited states can significantly impact the dynamics of trapped two-dimensional BECs.
Keywords
Cite
@article{arxiv.1409.0323,
title = {Breaking the resilience of a two-dimensional Bose-Einstein condensate to fragmentation},
author = {Shachar Klaiman and Axel U. J. Lode and Alexej I. Streltsov and Lorenz S. Cederbaum and Ofir E. Alon},
journal= {arXiv preprint arXiv:1409.0323},
year = {2014}
}
Comments
5+eps pages, 4 figures