Casimir Effects: an Optical Approach II. Local Observables and Thermal Corrections

Details Casimir Effects: an Optical Approach II. Local Observables and Thermal Corrections Casimir Effects: an Optical Approach II. Local Observables and Thermal Corrections

2005-07-04

arxiv.org/abs/quant-ph/0507042v1

Nucl.Phys. B743 (2006) 249-275

Physics

Quantum Physics

35 pages, 7 figures

Scientific paper

10.1016/j.nuclphysb.2006.02.038

We recently proposed a new approach to the Casimir effect based on classical ray optics (the "optical approximation"). In this paper we show how to use it to calculate the local observables of the field theory. In particular we study the energy-momentum tensor and the Casimir pressure. We work three examples in detail: parallel plates, the Casimir pendulum and a sphere opposite a plate. We also show how to calculate thermal corrections, proving that the high temperature `classical limit' is indeed valid for any smooth geometry.

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