Abstract
We calculate the number of photons produced by the parametric resonance in a cavity with vibrating walls. We consider the case that the frequency of vibrating wall is which is a generalization of other works considering only , where is the fundamental-mode frequency of the electromagnetic field in the cavity. For the calculation of time evolution of quantum fields, we introduce a method that is borrowed from the time-dependent perturbation theory of the usual quantum mechanics. This perturbation method makes it possible to calculate the photon number for any and to observe clearly the effect of the parametric resonance.
- Received 3 June 1997
DOI:https://doi.org/10.1103/PhysRevA.56.4440
©1997 American Physical Society