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arXiv 0811.4298quant-ph
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色散力和对偶性

Dispersion forces and duality

Stefan Yoshi Buhmann, Stefan Scheel, Hassan Safari, Dirk-Gunnar Welsch

摘要:

我们制定了一个对称性原则的基础上的对偶性的电场和磁场,并将其应用到色散力。在宏观量子电动力学的背景下,我们严格建立对偶不变性的自由电磁场的存在因果磁电。色散力的电磁场和原子的响应函数的格林张量。在讨论了格林张量在对偶变换下的行为之后,我们能够证明自由空间中物体上的Casimir力以及局域场校正的Casimir-Polder力和van der Waals力是对偶不变的。

英文摘要:

We formulate a symmetry principle on the basis of the duality of electric and magnetic fields and apply it to dispersion forces. Within the context of macroscopic quantum electrodynamics, we rigorously establish duality invariance for the free electromagnetic field in the presence of causal magnetoelectrics. Dispersion forces are given in terms of the Green tensor for the electromagnetic field and the atomic response functions. After discussing the behavior of the Green tensor under a duality transformation, we are able to show that Casimir forces on bodies in free space as well as local-field corrected Casimir-Polder and van der Waals forces are duality invariant.

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