摘要翻译:
在热量子场论框架下,得到了用Leontovich表面阻抗描述的两个真实金属间Casimir相互作用的低温渐近表达式。结果表明,用红外光学阻抗法计算的Casimir熵在零温度范围内消失。相反,利用Drude模型的阻抗计算的Casimir熵在零温度下达到一个与系统参数有关的正值,即违反了能斯特热定理。因此,红外光学的阻抗经得起热力学测试,而Drude模型的阻抗则经不起热力学测试。我们还对热卡西米尔力和真实金属板间真空间隙的辐射换热进行了唯象分析。用Drude模型的Leontovich阻抗对金属的表征表明,在几百纳米的分离处与实验不一致。考虑到弛豫过程,提出了对红外光学阻抗的修正。由于横向电倏逝波的贡献不同,由该阻抗预测的辐射换热功率比以前的预测要小几倍。讨论了Lifshitz公式中低频的物理意义。得出结论:为了在电磁涨落理论中找到对金属的充分描述,需要对辐射换热进行新的测量。
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英文标题:
《Thermal correction to the Casimir force, radiative heat transfer, and an
experiment》
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作者:
V. B. Bezerra, G. Bimonte, G. L. Klimchitskaya, V. M. Mostepanenko, C.
Romero
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最新提交年份:
2007
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分类信息:
一级分类:Physics 物理学
二级分类:Quantum Physics 量子物理学
分类描述:Description coming soon
描述即将到来
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一级分类:Physics 物理学
二级分类:Statistical Mechanics 统计力学
分类描述:Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变,热力学,场论,非平衡现象,重整化群和标度,可积模型,湍流
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一级分类:Physics 物理学
二级分类:High Energy Physics - Theory 高能物理-理论
分类描述:Formal aspects of quantum field theory. String theory, supersymmetry and supergravity.
量子场论的形式方面。弦理论,超对称性和超引力。
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英文摘要:
The low-temperature asymptotic expressions for the Casimir interaction between two real metals described by Leontovich surface impedance are obtained in the framework of thermal quantum field theory. It is shown that the Casimir entropy computed using the impedance of infrared optics vanishes in the limit of zero temperature. By contrast, the Casimir entropy computed using the impedance of the Drude model attains at zero temperature a positive value which depends on the parameters of a system, i.e., the Nernst heat theorem is violated. Thus, the impedance of infrared optics withstands the thermodynamic test, whereas the impedance of the Drude model does not. We also perform a phenomenological analysis of the thermal Casimir force and of the radiative heat transfer through a vacuum gap between real metal plates. The characterization of a metal by means of the Leontovich impedance of the Drude model is shown to be inconsistent with experiment at separations of a few hundred nanometers. A modification of the impedance of infrared optics is suggested taking into account relaxation processes. The power of radiative heat transfer predicted from this impedance is several times less than previous predictions due to different contributions from the transverse electric evanescent waves. The physical meaning of low frequencies in the Lifshitz formula is discussed. It is concluded that new measurements of radiative heat transfer are required to find out the adequate description of a metal in the theory of electromagnetic fluctuations.
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PDF链接:
https://arxiv.org/pdf/708.2487