Casimir effect with dynamical matter on thin mirrors

Details Casimir effect with dynamical matter on thin mirrors Casimir effect with dynamical matter on thin mirrors

2008-07-22

arxiv.org/abs/0807.3539v2

Phys.Lett.B669:371-375,2008

Physics

High Energy Physics

High Energy Physics - Theory

9 pages, no figures. Minor changes. Version to appear in Phys. Lett. B

Scientific paper

10.1016/j.physletb.2008.10.004

We calculate the Casimir energy for scalar and gauge fields in interaction with zero-width mirrors, including quantum effects due to the matter fields inside the mirrors. We consider models where those fields are either scalar or fermionic, obtaining general expressions for the energy as a function of the vacuum field 1PI function. We also study, within the frame of a concrete model, the role of the dissipation induced by those degrees of freedom, showing that, after integration of the matter fields, the effective theory for the electromagnetic field contains modes with complex energies. As for the case of Lifshitz formula, we show that the formal result obtained by neglecting dissipation coincides with the correct result that comes from the quantum fluctuations of both bulk and matter fields.

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