Volume 130, Number 5, June 2020
|Number of page(s)||6|
|Section||Condensed Matter: Structural, Mechanical and Thermal Properties|
|Published online||01 July 2020|
The condensation of a spin-orbit coupled Bose gas in a uniform gravitational field
Department of Physics, Beijing Technology and Business University - Beijing 100048, China
Received: 30 March 2020
Accepted: 14 June 2020
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.
PACS: 67.85.Fg – Multicomponent condensates; spinor condensates / 03.75.Hh – Static properties of condensates; thermodynamical, statistical, and structural properties / 67.85.-d – Ultracold gases, trapped gases
© EPLA, 2020
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