The condensation of a spin-orbit coupled Bose gas in a uniform gravitational field

In this paper, we consider the effect of a uniform gravitational field on a spin-orbit coupled Bose gas. In a semiclassical approximation, we find that the gravitational field triggers Bose-Einstein condensation at finite temperature. For weak gravitational field, the critical temperature increases...

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Bibliographic Details
Published inEurophysics letters Vol. 130; no. 5; pp. 56003 - 56008
Main Author He, Pei-Song
Format Journal Article
LanguageEnglish
Published Les Ulis EDP Sciences, IOP Publishing and Società Italiana di Fisica 01.06.2020
IOP Publishing
Subjects
Critical temperature
Gravitational fields
Spin-orbit interactions
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Summary:In this paper, we consider the effect of a uniform gravitational field on a spin-orbit coupled Bose gas. In a semiclassical approximation, we find that the gravitational field triggers Bose-Einstein condensation at finite temperature. For weak gravitational field, the critical temperature increases as the gravitational field goes more intense. And it first increases and then decreases along with increasing spin-orbit coupling strength. The heat capacity of the Bose gas varies continuously with the temperature around the critical one, which is different from the one in cases without a spin-orbit coupling.
ISSN:0295-5075
1286-4854
1286-4854
DOI:10.1209/0295-5075/130/56003