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We investigate the combined effects of a magnetic flux-carrying cosmic string and a brane on the fermionic condensate (FC) and on the vacuum expectation value (VEV) of the energy-momentum tensor for a massive charged fermionic field in…

High Energy Physics - Theory · Physics 2022-08-02 S. Bellucci , W. Oliveira dos Santos , E. R. Bezerra de Mello , A. A. Saharian

We investigate the influence of a brane on the vacuum expectation value (VEV) of the current density for a charged fermionic field in background of locally AdS spacetime with an arbitrary number of toroidally compact dimensions and in the…

High Energy Physics - Theory · Physics 2018-11-07 S. Bellucci , A. A. Saharian , D. H. Simonyan , V. V. Vardanyan

The vacuum expectation value (VEV) of the fermionic current density is investigated in the geometry of two parallel branes in locally AdS spacetime with a part of spatial dimensions compactified to a torus. Along the toral dimensions…

High Energy Physics - Theory · Physics 2020-03-04 S. Bellucci , A. A. Saharian , H. G. Sargsyan , V. V. Vardanyan

The two-point function and VEV of the current density are investigated for a massive charged scalar field with arbitrary curvature coupling in the geometry of a brane on background of AdS spacetime with partial toroidal compactification.The…

High Energy Physics - Theory · Physics 2015-12-22 S. Bellucci , A. A. Saharian , V. Vardanyan

In this paper we investigate the fermionic condensate (FC) and the vacuum expectation value (VEV) of the energy-momentum tensor, associated with a massive fermionic field, induced by the presence of a cosmic string in the anti-de Sitter…

High Energy Physics - Theory · Physics 2015-06-15 E. R. Bezerra de Mello , E. R. Figueiredo Medeiros , A. A. Saharian

In this paper we investigate the vacuum polarization effects associated to a charged quantum massive scalar field on a $(D+1)$-dimensional anti-de Sitter background induced by a magnetic-flux-carrying cosmic string in the braneworld model…

High Energy Physics - Theory · Physics 2023-08-03 W. Oliveira dos Santos , E. R. Bezerra de Mello

In this paper we investigate the bosonic current induced by a brane and a magnetic flux running along the idealized cosmic string in a $(D+1)$-dimensional anti-de Sitter (AdS) background. We consider the brane is parallel to the AdS…

High Energy Physics - Theory · Physics 2024-03-08 W. Oliveira dos Santos , E. R. Bezerra de Mello

In this paper we analyze the vacuum bosonic current associated with a massive charged scalar field propagating in a $(D+1)$-dimensional anti-de Sitter (AdS) bulk in the presence of an idealized carrying-magnetic-flux cosmic string and also…

High Energy Physics - Theory · Physics 2024-12-10 W. Oliveira dos Santos , E. R. Bezerra de Mello

We derive a closed expression for the vacuum expectation value (VEV) of the fermionic current density in a (D+1)-dimensional locally AdS spacetime with an arbitrary number of toroidally compactified Poincare spatial dimensions and in the…

High Energy Physics - Theory · Physics 2017-10-04 S. Bellucci , A. A. Saharian , V. Vardanyan

We evaluate the Hadamard function and the vacuum expectation value (VEV) of the current density for a charged scalar field in the region between two co-dimension one branes on the background of locally AdS spacetime with an arbitrary number…

High Energy Physics - Theory · Physics 2016-04-13 S. Bellucci , A. A. Saharian , V. Vardanyan

We review the results of investigations for brane-induced effects on the local properties of quantum vacuum in background of AdS spacetime. Two geometries are considered: a brane parallel to the AdS boundary and a brane intersecting the AdS…

High Energy Physics - Theory · Physics 2020-10-16 A. A. Saharian

We investigate combined effects of nontrivial topology, induced by a cosmic string, and boundaries on the fermionic condensate and the vacuum expectation value (VEV) of the energy-momentum tensor for a massive fermionic field. As geometry…

High Energy Physics - Theory · Physics 2017-06-28 A. Kh. Grigoryan , A. R. Mkrtchyan , A. A. Saharian

For a massive scalar field with general curvature coupling we evaluate the Wightman function in the geometry of two parallel branes perpendicular to the AdS boundary. On the separate branes, the field operator is constrained by Robin…

High Energy Physics - Theory · Physics 2022-10-12 S. Bellucci , A. A. Saharian , V. Kh. Kotanjyan

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 fermionic field in (4+1)-dimensional locally AdS spacetime. The…

High Energy Physics - Theory · Physics 2022-01-12 S. Bellucci , W. Oliveira dos Santos , E. R. Bezerra de Mello , A. A. Saharian

In this paper we investigate the fermionic condensate and the renormalized vacuum expectation value (VEV) of the energy-momentum tensor for a massive fermionic field induced by a flat boundary in the cosmic string spacetime. In this…

High Energy Physics - Theory · Physics 2012-12-06 E. R. Bezerra de Mello , A. A. Saharian , S. V. Abajyan

We investigate the combined effects of a brane intersecting the AdS boundary and background gravitational field on the local characteristics of the electromagnetic vacuum. Two types of boundary conditions on the brane are considered, which…

High Energy Physics - Theory · Physics 2026-04-21 A. A. Saharian , R. M. Avagyan , V. F. Manukyan

We investigate the combined effects of boundaries and topology on the vacuum expectation values (VEVs) of the charge and current densities for a massive 2D fermionic field confined on a conical ring threaded by a magnetic flux. Different…

High Energy Physics - Theory · Physics 2020-04-01 S. Bellucci , I. Brevik , A. A. Saharian , H. G. Sargsyan

In this paper, we consider a massive charged fermionic quantum field and investigate the current densities induced by a magnetic flux running along the core of an idealized cosmic string in the background geometry of a 5-dimensional anti-de…

High Energy Physics - Theory · Physics 2020-11-17 S. Bellucci , W. Oliveira dos Santos , E. R. Bezerra de Mello

We investigate the Wightman function, the vacuum expectation values of the field squared and the energy-momentum tensor for a massive scalar field with general curvature coupling parameter subject to Robin boundary conditions on two…

High Energy Physics - Theory · Physics 2009-05-06 A. A. Saharian

We investigate the vacuum fermionic currents in the geometry of a compactified cosmic string on background of de Sitter spacetime. The currents are induced by magnetic fluxes running along the cosmic string and enclosed by the compact…

High Energy Physics - Theory · Physics 2015-06-15 A. Mohammadi , E. R. Bezerra de Mello , A. A. Saharian
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