Variance of a Trapped Bose-Einstein Condensate

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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.

Original languageEnglish
Article number012009
Number of pages9
JournalJournal of Physics: Conference Series
Issue number1
StatePublished - 17 Apr 2019
Event27th Annual International Laser Physics Workshop, LPHYS 2018 - Nottingham, United Kingdom
Duration: 16 Jul 201818 Jul 2018

Bibliographical note

Funding 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.

Publisher Copyright:
© Published under licence by IOP Publishing Ltd.

ASJC Scopus subject areas

  • General Physics and Astronomy


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