Casimir effect for a spherical shell in de Sitter spacetime with signature change

Details Casimir effect for a spherical shell in de Sitter spacetime with signature change Casimir effect for a spherical shell in de Sitter spacetime with signature change

2005-11-07

arxiv.org/abs/hep-th/0511077v1

Int.J.Mod.Phys.D17:2261-2268,2008

Physics

High Energy Physics

High Energy Physics - Theory

8 pages, no figures

Scientific paper

10.1142/S0218271808013844

The Casimir stress on a spherical shell in de Sitter signature changing background for massless scalar field satisfying Dirichlet boundary conditions on the shell is calculated. The Casimir stress is calculated for inside and outside of the shell with different backgrounds corresponding to different metric signatures and cosmological constants. An important contribution appears due to signature change which leads to a transient rapid expansion of the bubbles in this background.

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