The ground state of a Bose-Einstein condensate in a two-dimensional trap potential is analyzed numerically at the infinite-particle limit. It is shown that the anisotropy of the many-particle position variance along the x and y axes can be opposite when computed at the many-body and mean-field levels of theory. This is despite the system being 100% condensed, and the respective energies per particle and densities per particle to coincide.
|Number of pages||9|
|Journal||Journal of Physics: Conference Series|
|State||Published - 17 Apr 2019|
|Event||27th Annual International Laser Physics Workshop, LPHYS 2018 - Nottingham, United Kingdom|
Duration: 16 Jul 2018 → 18 Jul 2018
Bibliographical noteFunding Information:
This research was supported by the Israel Science Foundation (Grant No. 600/15). We thank Raphael Beinke, Sudip Haldar, and Kaspar Sakmann for discussions. Computation time on the BwForCluster and the Cray XC40 system Hazelhen at the High Performance Computing Center Stuttgart (HLRS) is gratefully acknowledged.
© Published under licence by IOP Publishing Ltd.
ASJC Scopus subject areas
- Physics and Astronomy (all)