Action of the gravitational field on the dynamical Casimir effect

Details Action of the gravitational field on the dynamical Casimir effect Action of the gravitational field on the dynamical Casimir effect

2008-09-22

arxiv.org/abs/0809.3706v1

Class.Quant.Grav.26:105014,2009

Physics

Quantum Physics

2 Figures, comments are welcome

Scientific paper

10.1088/0264-9381/26/10/105014

In this paper we analyze the action of the gravitational field on the dynamical Casimir effect. We consider a massless scalar field confined in a cuboid cavity placed in a gravitational field described by a static and diagonal metric. With one of the plane mirrors of the cavity allowed to move, we compute the average number of particles created inside the cavity by means of the Bogoliubov coefficients computed through perturbative expansions. We apply our result to the case of an oscillatory motion of the mirror, assuming a weak gravitational field described by the Schwarzschild metric. The regime of parametric amplification is analyzed in detail, demonstrating that our computed result for the mean number of particles created agrees with specific associated cases in the literature. Our results, obtained in the framework of the perturbation theory, are restricted, under resonant conditions, to a short-time limit.

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