8 citations · 49 across the 13 of their papers we have counts for
13 papers
Scalar vacuum densities on Beltrami pseudosphere
T. A. Petrosyan
We investigate the combined effects of spatial curvature and topology on the properties of the vacuum state for a charged scalar field localized on the (2+1)-dimensional Beltrami p…
Topological Casimir effect for fermionic condensate in AdS spacetime with compact dimensions
T. A. Petrosyan, A. A. Grigoryan, A. A. Saharian
We investigate combined effects of gravitational field and spatial topology on the fermionic condensate (FC) for a massive Dirac field in locally anti-de Sitter (AdS) spacetime wit…
Finite temperature fermionic charge and current densities in conical space with a circular edge
A. A. Saharian, V. F. Manukyan, T. A. Petrosyan
We study the finite temperature and edge induced effects on the charge and current densities for a massive spinor field localized on a 2D conical space threaded by a magnetic flux.…
Plane symmetric gravitational fields in (D+1)-dimensional General Relativity
R. M. Avagyan, T. A. Petrosyan, A. A. Saharian +1
We consider plane symmetric gravitational fields within the framework of General Relativity in (D+1)-dimensional spacetime. Two classes of vacuum solutions correspond to higher-dim…
Cosmological evolution with negative energy densities
A. A. Saharian, R. M. Avagyan, E. R. Bezerra de Mello +3
For general number of spatial dimensions we investigate the cosmological dynamics driven by a cosmological constant and by a source with barotropic equation of state. It is assumed…
Polarization of the conformal vacuum in the Milne universe
T. A. Petrosyan
The vacuum expectation values (VEVs) of the field squared and energy-momentum tensor for a massless scalar field are investigated in the Milne universe with general number of spati…
Fermionic condensate in de Sitter spacetime
A. A. Saharian, E. R. Bezerra de Mello, A. S. Kotanjyan +1
Fermionic condensate is investigated in -dimensional de Sitter spacetime by using the cutoff function regularization. In order to fix the renormalization ambiguity for massi…
Mean field squared and energy-momentum tensor for the hyperbolic vacuum in dS spacetime
A. A. Saharian, T. A. Petrosyan, V. S. Torosyan
We evaluate the Hadamard function and the vacuum expectation values (VEVs) of the field squared and energy-momentum tensor for a massless conformally coupled scalar field in $(D+1)…
Casimir densities induced by a sphere in the hyperbolic vacuum of de Sitter spacetime
A. A. Saharian, T. A. Petrosyan
Complete set of modes and the Hadamard function are constructed for a scalar field inside and outside a sphere in (D+1)-dimensional de Sitter spacetime foliated by negative constan…
Casimir effect for fermion condensate in conical rings
A. A. Saharian, T. A. Petrosyan, A. A. Hovhannisyan
The fermion condensate (FC) is investigated for a (2+1)-dimensional massive fermionic field confined on a truncated cone with an arbitrary planar angle deficit and threaded by a ma…
The Casimir densities for a sphere in the Milne universe
A. A. Saharian, T. A. Petrosyan
The influence of a spherical boundary on the vacuum fluctuations of a massive scalar field is investigated in background of -dimensional Milne universe, assuming that the fi…
Angular distribution of high power radiation from a charge rotating around a dielectric ball
L. Sh. Grigoryan, A. A. Saharian, H. F. Khachatryan +3
We study the angular distribution of the radiation from a relativistic charged particle uniformly rotating along an equatorial orbit around a dielectric ball. Earlier it was shown…
Scalar Casimir effect in a linearly expanding universe
A. A. Saharian, T. A. Petrosyan, S. V. Abajyan +1
We investigate quantum vacuum effects for a massive scalar field, induced by two planar boundaries in background of a linearly expanding spatially flat Friedmann-Robertson-Walker s…