Quantum open systems approach to the dynamical Casimir effect

Abstract

We analyze the introduction of dissipative effects in the study of the dynamical Casimir effect. We consider a toy model for an electromagnetic cavity that contains a semiconducting thin shell, which is irradiated with short laser pulses in order to produce periodic oscillations of its conductivity. The coupling between the quantum field in the cavity and the microscopic degrees of freedom of the shell induces dissipation and noise in the dynamics of the field. We argue that the photon creation process should be described in terms of a damped oscillator with nonlocal dissipation and colored noise.Comment: 12 pages, to appear in the Proceedings of the "Wokshop on Quantum Nonstationary Systems", Brasilia 2009 (Special Issue, Physica Scripta