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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…
Surface vacuum energy and stresses for a brane in de Sitter spacetime
M R Setare
Vacuum expectation values of the surface energy-momentum tensor is investigated for a massless scalar field obeying mixed boundary condition on a brane in de Sitter bulk. To genera…
Casimir densities for a spherical brane in Rindler-like spacetimes
A. A. Saharian, M. R. Setare
Wightman function, the vacuum expectation values of the field square and the energy-momentum tensor are evaluated for a scalar field obeying mixed boundary condition on a spherical…
The Generalized Uncertainty Principle and Corrections to the Cardy-Verlinde Formula in Black Holes
M R Setare
In this letter, we investigate a possible modification to the temperature and entropy of dimensional Schwarzschild anti de Sitter black holes due to incorporating stringy corre…
Area Spectrum of Near Extremal Black Branes from Quasi-normal Modes
M R Setare
Motivated by the recent interest in quantization of black hole area spectrum, we consider the area spectrum of near extremal black branes. Based on the proposal by Bekenstein a…
The Self-Gravitational Corrections as the Source for Stiff Matter on the Brane in Bulk
M R Setare
A brane with non-zero energy density is considered as the boundary of a five dimensional Schwarzschild anti de Sitter bulk background. Taking into account the semi-classical…