Physically Sound Hamiltonian Formulation of the Dynamical Casimir Effect

Details Physically Sound Hamiltonian Formulation of the Dynamical Casimir Effect Physically Sound Hamiltonian Formulation of the Dynamical Casimir Effect

2007-05-04

arxiv.org/abs/0705.0597v1

Phys.Rev.D76:065001,2007

Physics

High Energy Physics

High Energy Physics - Theory

14 pages, no figures

Scientific paper

10.1103/PhysRevD.76.065001

Recently [J. Haro and E. Elizalde, Phys. Rev. Lett. {\bf 97}, 130401 (2006)], a Hamiltonian formulation has been introduced in order to address some longstanding severe problems associated with the physical description of the dynamical Casimir effect at all times while the mirrors are moving. Here we present the complete calculation providing precise details, in particular, of the regularization procedure, which is decisive for the correct derivation of physically meaningful quantities. A basic difference when comparing with the results previously obtained by other authors is the fact that the motion force derived in our approach contains a reactive term --proportional to the mirrors' acceleration. This is of the essence in order to obtain particles with a positive energy all the time during the oscillation of the mirrors --while always satisfying the energy conservation law. A careful analysis of the interrelations among the different results previously obtained in the literature is then carried out. For simplicity, the specific case of a neutral scalar field in one dimension, with one or two partially transmitting mirrors (a fundamental proviso for the regularization issue) is considered in more detail, but our general method is shown to be generalizable, without essential problems (Sect. 2 of this paper), to fields of any kind in two and higher dimensions.

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