Numerical approach to simulating interference phenomena in a cavity with two oscillating mirrors

Abstract

We study photon creation in a cavity with two perfectly conducting moving mirrors. We derive the dynamic equations of the modes and study different situations concerning various movements of the walls, such as translational or breathing modes. We can even apply our approach to one- or three-dimensional cavities and reobtain well-known results of cavities with one moving mirror. We compare the numerical results with analytical predictions and discuss the effects of the intermode coupling in detail as well as the nonperturbative regime. We also study the time evolution of the energy density and provide analytic justifications for the different results found numerically.