Artículo

Herscovich, E.; Richarte, M.G. "Black holes in Einstein-Gauss-Bonnet gravity with a string cloud background" (2010) Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 689(4-5):192-200
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Abstract:

We obtain a black hole solution in the Einstein-Gauss-Bonnet theory for the string cloud model in a five-dimensional spacetime. We analyze the event horizons and naked singularities. Later, we compute the Hawking temperature TH, the specific heat C, the entropy S, and the Helmholtz free energy F of the black hole. The entropy was computed using the Wald formulation. In addition, the quantum correction to the Wald's entropy is considered for the string cloud source. We mainly explore the thermodynamical global and local stability of the system with vanishing or non-vanishing cosmological constant. The global thermodynamic phase structure indicates that the Hawking-Page transition is achieved for this model. Further, we observe that there exist stable black holes with small radii and that these regions are enlarged when choosing small values of the string cloud density and of the Gauss-Bonnet parameter. Besides, the rate of evaporation for these black holes are studied, determining whether the evaporation time is finite or not. Then, we concentrate on the dynamical stability of the system, studying the effective potential for s-waves propagating on the string cloud background. © 2010 Elsevier B.V. All rights reserved.

Registro:

Documento: Artículo
Título:Black holes in Einstein-Gauss-Bonnet gravity with a string cloud background
Autor:Herscovich, E.; Richarte, M.G.
Filiación:Institut für Mathematik, Universität Paderborn, 33098 Paderborn, Germany
Departamento de Física, Facultad de Ciencias Exactas y Naturales, UBA Ciudad Universitaria, Pabellón I, 1428 Buenos Aires, Argentina
Palabras clave:Black holes; Gauss-Bonnet; String cloud model
Año:2010
Volumen:689
Número:4-5
Página de inicio:192
Página de fin:200
DOI: http://dx.doi.org/10.1016/j.physletb.2010.04.065
Handle:http://hdl.handle.net/20.500.12110/paper_03702693_v689_n4-5_p192_Herscovich
Título revista:Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Título revista abreviado:Phys Lett Sect B Nucl Elem Part High-Energy Phys
ISSN:03702693
CODEN:PYLBA
PDF:https://bibliotecadigital.exactas.uba.ar/download/paper/paper_03702693_v689_n4-5_p192_Herscovich.pdf
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03702693_v689_n4-5_p192_Herscovich

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Citas:

---------- APA ----------
Herscovich, E. & Richarte, M.G. (2010) . Black holes in Einstein-Gauss-Bonnet gravity with a string cloud background. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 689(4-5), 192-200.
http://dx.doi.org/10.1016/j.physletb.2010.04.065
---------- CHICAGO ----------
Herscovich, E., Richarte, M.G. "Black holes in Einstein-Gauss-Bonnet gravity with a string cloud background" . Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 689, no. 4-5 (2010) : 192-200.
http://dx.doi.org/10.1016/j.physletb.2010.04.065
---------- MLA ----------
Herscovich, E., Richarte, M.G. "Black holes in Einstein-Gauss-Bonnet gravity with a string cloud background" . Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 689, no. 4-5, 2010, pp. 192-200.
http://dx.doi.org/10.1016/j.physletb.2010.04.065
---------- VANCOUVER ----------
Herscovich, E., Richarte, M.G. Black holes in Einstein-Gauss-Bonnet gravity with a string cloud background. Phys Lett Sect B Nucl Elem Part High-Energy Phys. 2010;689(4-5):192-200.
http://dx.doi.org/10.1016/j.physletb.2010.04.065