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We analyze the bosonic current densities induced by a magnetic flux running along an idealized cosmic string considering that the coordinate along its axis is compactified. We also consider the presence of a magnetic flux enclosed by the…

High Energy Physics - Theory · Physics 2016-04-13 E. A. F. Bragança , H. F. Santana Mota , E. R. Bezerra de Mello

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

In this paper, we analyse the bosonic current densities induced by a magnetic flux running along an idealized cosmic string in a high-dimensional spacetime, admitting that the coordinate along the string's axis is compactified. Additionally…

High Energy Physics - Theory · Physics 2015-05-28 E. A. F. Bragança , H. F. Santana Mota , E. R. Bezerra de Mello

In this paper, we analyse the bosonic current densities induced by a magnetic flux running along the core of an idealized cosmic string in a high-dimensional AdS spacetime, admitting that an extra dimension coordinate is compactified.…

High Energy Physics - Theory · Physics 2019-02-20 W. Oliveira dos Santos , H. F. Mota , E. R. Bezerra de Mello

In this paper, we investigate the fermionic current densities induced by a magnetic flux running along the idealized cosmic string in a four-dimensional spacetime, admitting that the coordinate along the string's axis is compactified. In…

High Energy Physics - Theory · Physics 2013-08-29 E. R. Bezerra de Mello , A. A. Saharian

In this paper, we investigate the vacuum bosonic current density induced by a carrying-magnetic-flux cosmic string in a $(D+1)$-de Sitter spacetime considering the presence of two flat boundaries perpendicular to it. In this setup, the…

High Energy Physics - Theory · Physics 2024-12-05 W. Oliveira dos Santos , H. F. Santana Mota , E. R. Bezerra de Mello

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

Vacuum polarization effects in the cosmic string background are considered. We find that a current is induced in the vacuum of the quantized massive scalar field and that the current circulates around the string which is generalized to a…

High Energy Physics - Theory · Physics 2009-11-18 Yu. A. Sitenko , N. D. Vlasii

In this paper we study the expectation values of the induced charge and current densities for a massive bosonic field with nonzero chemical potential in the geometry of a higher dimensional compactified cosmic string with magnetic fluxes,…

High Energy Physics - Theory · Physics 2016-06-29 Azadeh Mohammadi , Eugênio Ramos Bezerra de Mello

We investigate the vacuum-induced current density for a charged scalar field in a $(D+1)$-dimensional cosmic dispiration spacetime threaded by a magnetic flux. This background combines a cosmic string and a screw dislocation, yielding a…

High Energy Physics - Theory · Physics 2026-04-10 Herondy Mota

We study the fermionic condensate (FC) and the vacuum expectation value (VEV) of the energy-momentum tensor for a massive spinor field in the de Sitter (dS) spacetime including an ideal cosmic string. In addition, spatial dimension along…

High Energy Physics - Theory · Physics 2020-03-04 E. A. F. Bragança , E. R. Bezerra de Mello , A. Mohammadi

In this paper we investigate the vacuum current associated with a charged bosonic field operator, induced by a cylindrical boundary in the idealized cosmic string spacetime. In this setup we assume that the cylindrical boundary is coaxial…

High Energy Physics - Theory · Physics 2025-08-28 E. R. Bezerra de Mello , H. F. Santana Mota , W. Oliveira dos Santos

In this paper we analyse the vacuum fluctuations of quantum fermionic current densities, $<j^A(x)>$, induced by a magnetic flux running along the core of the conical space produced by the presence of cosmic string, in a $(1+d)-$dimensional…

High Energy Physics - Theory · Physics 2014-11-20 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

We investigate the fermionic condensate and the vacuum expectation value of the energy-momentum tensor for a massive spinor field in the geometry of a straight cosmic string on background of de Sitter spacetime. By using the Abel-Plana…

High Energy Physics - Theory · Physics 2010-08-24 E. R. Bezerra de Mello , A. A. Saharian

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 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

In this paper, we analyze the vacuum expectation values (VEVs) of the field squared and the energy-momentum tensor associated with a charged and massive scalar quantum field in a generalized $(D+1)$-dimensional anti-de Sitter space in the…

High Energy Physics - Theory · Physics 2020-01-15 W. Oliveira dos Santos , E. R. Bezerra de Mello , H. F. Mota

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 in the generalized cosmic string geometry with a compact…

High Energy Physics - Theory · Physics 2012-01-17 E. R. Bezerra de Mello , A. A. Saharian

In this paper we analyze the vacuum bosonic current and polarization induced by a magnetic flux running along a higher dimensional cosmic string in the presence of a flat boundary orthogonal to the string. In our analysis we assume that the…

High Energy Physics - Theory · Physics 2020-12-04 E. A. F. Bragança , E. R. Bezerra de Mello
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