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arXiv 0909.1336cond-mat.stat-mechcond-mat.quant-gashep-th
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Lieb-Liniger玻色气体的期望值

Expectation Values in the Lieb-Liniger Bose Gas

M. Kormos, G. Mussardo, A. Trombettoni

摘要:

利用相对论可积模型和Lieb-Liniger模型之间的精确映射,我们提出了一种计算Lieb-Liniger玻色气体在零温和有限温下的期望值的新方法.这些物理量与一维超冷玻色气体的物理学有关,用一个具有显著收敛性的级数来表示。在其他结果中,我们展示了有限温度下三体期望值的计算,该值决定了玻色气体的复合率。

英文摘要:

Taking advantage of an exact mapping between a relativistic integrable model and the Lieb-Liniger model we present a novel method to compute expectation values in the Lieb-Liniger Bose gas both at zero and finite temperature. These quantities, relevant in the physics of one-dimensional ultracold Bose gases, are expressed by a series that has a remarkable behavior of convergence. Among other results, we show the computation of the three-body expectation value at finite temperature, a quantity that rules the recombination rate of the Bose gas.

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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