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Surface Casimir densities on a spherical brane in Rindler-like spacetimes
A. A. Saharian, M. R. Setare
The vacuum expectation value of the surface energy-momentum tensor is evaluated for a scalar field obeying Robin boundary condition on a spherical brane in (D+1)-dimensional spacet…
Casimir effect for a spherical shell in de Sitter spacetime with signature change
M. R. Setare, F. Darabi
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. Th…
Casimir energy-momentum tensor for the Robin Surfaces in de Sitter Spacetime
M R Setare
The energy-momentum tensor for a massless conformally coupled scalar field in de Sitter spacetime in the presence of a couple curved branes is investigated. We assume that the scal…
Entropy of Scalar Field near a Schwarzschild Black Hole Horizon
M R Setare
In this paper we compute the correction to the entropy of Schwarzschild black hole due to the vacuum polarization effect of massive scalar field. The Schwarzschild black hole is su…
Quasinormal Modes, Reduced Phase Space and Area Spectrum of Black Holes
M R Setare
Motivated by the recent interest in quantization of black hole area spectrum, we consider the area spectrum of Schwarzschild, BTZ, extremal Reissner-Nordström, near extremal Schwar…
Casimir effect in a two dimensional signature changing spacetime
F. Darabi, M. R. Setare
We study the Casimir effect for free massless scalar fields propagating on a two-dimensional cylinder with a metric that admits a change of signature from Lorentzian to Euclidean.…