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arXiv 1104.5447cond-mat.stat-mechquant-ph
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球的Casimir能量和熵--球几何

Casimir Energy and Entropy in the Sphere--Sphere Geometry

Pablo Rodriguez-Lopez

摘要:

在大分离极限下,我们计算了两个球在理想金属模型、等离子体模型和Drude模型下的Casimir能量和熵。我们得到的Helmholtz自由能与分离和温度的理想金属和等离子体模型的非单调行为,导致参数范围与负熵,也非单调行为的熵与温度和分离之间的领域。而Drude模型则没有这种非单调性。这种异常行为的熵的外观进行了讨论,以及其热力学后果。

英文摘要:

We calculate the Casimir energy and entropy for two spheres described by the perfect metal model, plasma model, and Drude model in the large separation limit. We obtain nonmonotonic behavior of the Helmholtz free energy with separation and temperature for the perfect metal and plasma models, leading to parameter ranges with negative entropy, and also nonmonotonic behavior of the entropy with temperature and the separation between the spheres. This nonmonotonic behavior has not been found for Drude model. The appearance of this anomalous behavior of the entropy is discussed as well as its thermodynamic consequences.

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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