182 citations · 4.3k across the 208 of their papers we have counts for
11 papers · 1 filter
Casimir densities for a boundary in Robertson-Walker spacetime
A. A. Saharian, M. R. Setare
For scalar and electromagnetic fields we evaluate the vacuum expectation value of the energy-momentum tensor induced by a curved boundary in the Robertson--Walker spacetime with ne…
Optical transition radiation in presence of acoustic waves
A. R. Mkrtchyan, V. V. Parazian, A. A. Saharian
Transition radiation from relativistic electrons is investigated in an ultrasonic superlattice excited in a finite thickness plate. In the quasi-classical approximation formulae ar…
Topological Casimir effect in power-law FRW cosmologies
A. L. Mkhitaryan, A. A. Saharian
We investigate the vacuum expectation values of the field squared and the energy-momentum tensor for a massless scalar field with general curvature coupling parameter in spatially…
Topological Casimir effect in nanotubes and nanoloopes
A. A. Saharian
The Casimir effect is investigated in cylindrical and toroidal carbon nanotubes within the framework of the Dirac-like model for the electronic states. The topological Casimir ener…
Vacuum fluctuations and topological Casimir effect in Friedmann-Robertson-Walker cosmologies with compact dimensions
A. A. Saharian, A. L. Mkhitaryan
We investigate the Wightman function, the vacuum expectation values of the field squared and the energy-momentum tensor for a massless scalar field with general curvature coupling…
Casimir densities for a plate in de Sitter spacetime
A. A. Saharian, T. A. Vardanyan
Wightman function, the vacuum expectation values of the field squared and the energy-momentum tensor are investigated for a scalar field with general curvature coupling parameter i…
Fermionic Casimir effect for parallel plates in the presence of compact dimensions with applications to nanotubes
S. Bellucci, A. A. Saharian
We evaluate the Casimir energy and force for a massive fermionic field in the geometry of two parallel plates on background of Minkowski spacetime with an arbitrary number of toroi…
A summation formula over the zeros of a combination of the associated Legendre functions with a physical application
A. A. Saharian
By using the generalized Abel-Plana formula, we derive a summation formula for the series over the zeros of a combination of the associated Legendre functions with respect to the d…
Vacuum polarization by a cosmic string in de Sitter spacetime
E. R. Bezerra de Mello, A. A. Saharian
In this paper we investigate the vacuum polarization effect associated with a quantum massive scalar field in a higher dimensional de Sitter spacetime in the presence of a cosmic s…
Fermionic Casimir densities in toroidally compactified spacetimes with applications to nanotubes
S. Bellucci, A. A. Saharian
Fermionic condensate and the vacuum expectation values of the energy-momentum tensor are investigated for a massive spinor fields in higher-dimensional spacetimes with an arbitrary…
Repulsive Casimir effect from extra dimensions and Robin boundary conditions: from branes to pistons
E. Elizalde, S. D. Odintsov, A. A. Saharian
We evaluate the Casimir energy and force for a massive scalar field with general curvature coupling parameter, subject to Robin boundary conditions on two codimension-one parallel…