182 citations · 4.3k across the 208 of their papers we have counts for
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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)…
Fermionic vacuum polarization around a cosmic string in compactified AdS spacetime
S. Bellucci, W. Oliveira dos Santos, E. R. Bezerra de Mello +1
We investigate topological effects of a cosmic string and compactification of a spatial dimension on the vacuum expectation value (VEV) of the energy-momentum tensor for a fermioni…
Vacuum currents in partially compactified Rindler spacetime with an application to cylindrical black holes
V. Kh. Kotanjyan, A. A. Saharian, M. R. Setare
The vacuum expectation value of the current density for a charged scalar field is investigated in Rindler spacetime with a part of spatial dimensions compactified to a torus. It is…
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…
The Holographic cosmology with axion field
A. A. Saharian, A. V. Timoshkin
In present article we consider an axion F(R) gravity model and described with the help of holographic principle the cosmological models of viscous dark fluid coupled with axion mat…