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arXiv 0712.1395cond-mat.mes-hallcond-mat.mtrl-sci
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金属薄膜Casimir力的反常温度依赖性

Anomalous temperature dependence of the Casimir force for thin metal films

V. A. Yampol'skii, Sergey Savel'ev, Z. A. Mayselis, S. S. Apostolov, Franco Nori

摘要:

在Drude色散模型的框架内,我们预测了一个不寻常的非单调的温度依赖性的Casimir力的薄金属膜。在一定条件下,由于金属导电性的降低,该力随温度而减小,而由于热辐射压力的增加,该力在高温下增加。我们考虑的吸引力的电影:(i)一个散装理想金属与平面边界,或(ii)散装金属球(透镜)。实验观测到Casimir力的非单调温度依赖性,可以结束长期以来关于电子弛豫在Casimir效应中的作用的讨论。

英文摘要:

Within the framework of the Drude dispersive model, we predict an unusual non-monotonous temperature dependence of the Casimir force for thin metal films. For certain conditions, this force decreases with temperature due to the decrease of the metallic conductivity, whereas the force increases at high temperatures due to the increase of the thermal radiation pressure. We consider the attraction of a film to: either (i) a bulk ideal metal with a planar boundary, or (ii) a bulk metal sphere (lens). The experimental observation of the predicted non-monotonous temperature dependence of the Casimir force can put an end to the long-standing discussion on the role of the electron relaxation in the Casimir effect.

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