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- W2016290445 abstract "In this work we consider the dynamical Casimir effect for a massless scalar field---under Dirichlet boundary conditions---between two concentric spherical shells. We obtain a general expression for the average number of particle creation, for an arbitrary law of radial motion of the spherical shells, using two distinct methods: by computing the density operator of the system and by calculating the Bogoliubov coefficients. We apply our general expression to breathing modes: when only one of the shells oscillates and when both shells oscillate in or out of phase. Since our results were obtained in the framework of the perturbation theory, under resonant breathing modes they are restricted to a short-time approximation. We also analyze the number of particle production and compare it with the results for the case of plane geometry." @default.
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- W2016290445 date "2008-09-25" @default.
- W2016290445 modified "2023-09-23" @default.
- W2016290445 title "Dynamical Casimir effect for a massless scalar field between two concentric spherical shells" @default.
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- W2016290445 doi "https://doi.org/10.1103/physreva.78.032521" @default.
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