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For a massive quantum fermionic field, we investigate the vacuum expectation values (VEVs) of the charge and current densities induced by an external magnetic flux in a two-dimensional circular ring. Both the irreducible representations of…

High Energy Physics - Theory · Physics 2016-11-15 S. Bellucci , A. A. Saharian , A. Kh. Grigoryan

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. The field operator is constrained on a circular boundary,…

High Energy Physics - Theory · Physics 2025-04-22 A. A. Saharian , V. F. Manukyan , T. A. Petrosyan

The vacuum expectation value (VEV) of the energy-momentum tensor for a massive fermionic field is investigated in a (2+1)-dimensional conical spacetime in the presence of a circular boundary and an infinitely thin magnetic flux located at…

High Energy Physics - Theory · Physics 2012-02-14 E. R. Bezerra de Mello , F. Moraes , A. A. Saharian

We evaluate the Hadamard function and the vacuum expectation value (VEV) of the current density for a charged scalar field, induced by flat boundaries in spacetimes with an arbitrary number of toroidally compactified spatial dimensions. The…

High Energy Physics - Theory · Physics 2015-08-27 S. Bellucci , A. A. Saharian , N. A. Saharyan

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 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

We evaluate the fermion condensate and the expectation values of the charge and current densities for a massive fermionic field in (2+1)-dimensional conical spacetime with a magnetic flux located at the cone apex. The consideration is done…

High Energy Physics - Theory · Physics 2016-07-20 S. Bellucci , E. R. Bezerra de Mello , E. Bragança , 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

We investigate the vacuum expectation value of the fermionic current induced by a magnetic flux in a (2+1)-dimensional conical spacetime in the presence of a circular boundary. On the boundary the fermionic field obeys MIT bag boundary…

High Energy Physics - Theory · Physics 2010-11-12 E. R. Bezerra de Mello , V. B. Bezerra , A. A. Saharian , V. M. Bardeghyan

We investigate combined effects of topology and boundaries on the vacuum expectation value (VEV) of the fermionic current in the space with an arbitrary number of toroidally compactified dimensions. As a geometry of boundaries we consider…

High Energy Physics - Theory · Physics 2013-03-26 S. Bellucci , A. A. Saharian

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 magnetic flux. Different combinations of the boundary…

High Energy Physics - Theory · Physics 2021-03-24 A. A. Saharian , T. A. Petrosyan , A. A. Hovhannisyan

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

We investigate the effects of a brane and magnetic-flux-carrying cosmic string on the vacuum expectation value (VEV) of the current density for a charged fermionic field in the background geometry of 4+1 dimensional anti-de Sitter (AdS)…

High Energy Physics - Theory · Physics 2021-03-17 S. Bellucci , W. Oliveira dos Santos , E. R. Bezerra de Mello , A. A. Saharian

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 fermionic condensate (FC) and the vacuum expectation value (VEV) of the energy-momentum tensor for a charged massive fermionic field in the geometry of a cosmic string compactified along its axis. In addition, we assume…

High Energy Physics - Theory · Physics 2014-01-28 S. Bellucci , E. R. Bezerra de Mello , A. de Padua , 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 local characteristics of the Fulling-Rindler vacuum for a massive Dirac field induced by a planar boundary moving with constant proper acceleration in $(D+1)$-dimensional flat spacetime. On the boundary, the field…

High Energy Physics - Theory · Physics 2026-04-22 A. A. Saharian , L. Sh. Grigoryan , V. Kh. Kotanjyan

The vacuum expectation values of the field squared and the energy-momentum tensor are investigated for a scalar field with Dirichlet boundary conditions and for the electromagnetic field inside a wedge with a coaxial cylindrical boundary.…

High Energy Physics - Theory · Physics 2011-06-10 A. A. Saharian

We analyze the Casimir densities and forces associated with a massive scalar quantum field confined between two parallel plates in a D-dimensional cosmic string spacetime. The plates are placed orthogonal to the string and the field obeys…

High Energy Physics - Theory · Physics 2018-05-03 E. R. Bezerra de Mello , A. A. Saharian , S. V. Abajyan

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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