Dynamical Casimir effect for a massless scalar field between two concentric spherical shells with mixed boundary condictions

Details Dynamical Casimir effect for a massless scalar field between two concentric spherical shells with mixed boundary condictions Dynamical Casimir effect for a massless scalar field between two concentric spherical shells with mixed boundary condictions

2009-04-23

arxiv.org/abs/0904.3754v1

Physics

Quantum Physics

Scientific paper

We analyze the dynamical Casimir effect for a massless scalar field confined between two concentric spherical shells which impose on the field mixed boundary conditions. We thus complement a previous result [Phys. Rev. A \textbf{78}, 032521 (2008)], where the same problem was considered but in that case the field was submitted to a Dirichlet boundary condition in both moving spherical shells. A general expression for the average number of created particles is deduced for an arbitrary law of radial motion of the spherical shells. This expression is then applied to harmonic oscillations of the shells and the number of created particles is analyzed and compared with the results obtained under Dirichlet-Dirichlet boundary conditions.

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