Abstract
The dynamical Casimir effect is analyzed in the framework of the S-matrix formulation for a one-dimensional cavity that exhibits contraction at a constant rate over a finite time interval. The exact solution to the problem is presented. It is demonstrated that the efficiency of the creation of pairs nonmonotonically depends on the contraction time. This is due to the fact that the particles are only created at the moments corresponding to the acceleration and stopping of the moving boundary, so that the contributions of these processes on the number of the created particles interfere with each other. The parameters that correspond to the optimal creation of pairs and the stability of a vacuum are presented. The effect of the finiteness of the cavity-boundary acceleration on the results obtained is studied.
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Fedotov, A.M., Narozhny, N.B., Petrosyan, A.N. et al. On the dynamical Casimir effect in a one-dimensional contracting cavity. Laser Phys. 17, 310–315 (2007). https://doi.org/10.1134/S1054660X07040044
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DOI: https://doi.org/10.1134/S1054660X07040044