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arXiv 0711.0841quant-ph
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热排斥Casimir力的消失特性

Evanescent character of the repulsive thermal Casimir force

Vitaly B. Svetovoy

摘要:

阐明了金属间Casimir力负热修正的物理根源。为此目的,热卡西米尔力的渐近行为进行了分析,在大的和小的距离在实频率表示。传播波和倏逝波的贡献分别考虑。在很大的距离上,它们在很大程度上相互抵消,因此只有吸引力的Lifshitz极限存在。在较小的分离的情况下,在两种金属或金属和高介电常数电介质的情况下,s-偏振的排斥性倏逝波贡献占主导地位。在这两种情况下,斥力的共同起源和数量级证明了金属之间有争议的大的热校正的自然性。

英文摘要:

The physical origin of the negative thermal correction to the Casimir force between metals is clarified. For this purpose the asymptotic behavior of the thermal Casimir force is analyzed at large and small distances in the real frequency representation. Contributions from propagating and evanescent waves are considered separately. At large distances they cancel each other in substantial degree so that only the attractive Lifshitz limit survives. At smaller separations the repulsive evanescent contribution of s-polarization dominates in the case of two metals or a metal and a high-permittivity dielectric. Common origin and order of magnitude of the repulsion in these two cases demonstrate naturalness of the controversial large thermal correction between metals.

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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