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arXiv 1402.7220cond-mat.quant-gas
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旋转囚禁理想玻色气体的热力学性质

Thermodynamic properties of rotating trapped ideal Bose gases

Yushan Li, Qiang Gu

摘要:

超冷原子气体可以通过将它们限制在旋转框架中或通过引入"合成”磁场来自旋。本文用截断求和方法研究了旋转理想玻色气体的热力学。截断求和方法考虑了能级的离散性,而不是像半经典近似那样用积分来近似单粒子能级的求和。我们的结果表明,旋转坐标系中的玻色气体比“合成”磁场中的玻色气体对旋转频率的依赖性要强得多。因此,在旋转坐标系中比在"合成”磁场中更容易抑制BEC。

英文摘要:

Ultracold atomic gases can be spined up either by confining them in rotating frame, or by introducing ``synthetic" magnetic field. In this paper, thermodynamics of rotating ideal Bose gases are investigated within truncated-summation approach which keeps to take into account the discrete nature of energy levels, rather than to approximate the summation over single-particle energy levels by an integral as does in semi-classical approximation. Our results show that Bose gases in rotating frame exhibit much stronger dependence on rotation frequency than those in ``synthetic" magnetic field. Consequently, BEC can be more easily suppressed in rotating frame than in ``synthetic" magnetic field.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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