2020
DOI: 10.48550/arxiv.2007.15753
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Bose-Einstein condensate fluctuations versus an interparticle interaction

Sergey V. Tarasov,
Vladimir V. Kocharovsky,
Vitaly V. Kocharovsky

Abstract: We calculate the Bose-Einstein condensate (BEC) occupation statistics vs. the interparticle interaction in a dilute gas with a nonuniform condensate in a box trap within the Bogoliubov approach. The results are compared against the previously found BEC-occupation statistics in (i) an ideal gas and (ii) a weakly interacting gas with a uniform condensate. In particular, we reveal and explicitly describe an appearance of a nontrivial transition from the ideal gas to the Thomas-Fermi regime. The results include fi… Show more

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