arXivDaily arXiv每日学术速递 周一至周五更新
arXiv quant-ph/0212125quant-phhep-th
收藏

横向电零模对金属Casimir效应有贡献吗?

Does the Transverse Electric Zero Mode Contribute to the Casimir Effect for a Metal?

J. S. Hoye, I. Brevik, J. B. Aarseth, K. A. Milton

摘要:

有限温度Casimir自由能,熵,和内能被认为是新的传统的平行板配置,在目前的讨论中的文献。在“理想”金属的情况下,其特征在于由折射率等于无穷大的所有频率,我们恢复,通过一个有点非常规的方法,常规的结果的温度依赖性,这意味着零频率的横向电模式的贡献相同的横向磁模式。然而,对于一个真正的金属,在低频近似服从德鲁德色散模型,我们发现,零频率的横向电模式没有贡献。这似乎会导致可观察到的温度依赖性和违反热力学第三定律。有人建议,困难的来源是垂直偏振的反射系数的行为,但我们表明,情况并非如此。通过引入一个简化的Casimir相互作用模型,由两个谐振子通过第三个相互作用,我们说明了横向电场的行为。数值计算结果的基础上的折射率为金。一个线性温度校正平行板之间的卡西米尔力确实发现,这应该是在室温下观察到的实验,但这并不需要任何热力学不一致。

英文摘要:

The finite temperature Casimir free energy, entropy, and internal energy are considered anew for a conventional parallel-plate configuration, in the light of current discussions in the literature. In the case of an "ideal" metal, characterized by a refractive index equal to infinity for all frequencies, we recover, via a somewhat unconventional method, conventional results for the temperature dependence, meaning that the zero-frequency transverse electric mode contributes the same as the transverse magnetic mode. For a real metal, however, approximately obeying the Drude dispersive model at low frequencies, we find that the zero-frequency transverse electric mode does not contribute at all. This would appear to lead to an observable temperature dependence and a violation of the third law of thermodynamics. It had been suggested that the source of the difficulty was the behaviour of the reflection coefficient for perpendicular polarization but we show that this is not the case. By introducing a simplified model for the Casimir interaction, consisting of two harmonic oscillators interacting via a third one, we illustrate the behavior of the transverse electric field. Numerical results are presented based on the refractive index for gold. A linear temperature correction to the Casimir force between parallel plates is indeed found which should be observable in room-temperature experiments, but this does not entail any thermodynamic inconsistency.

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。

↑