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

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)


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