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dc.contributor.author
Herscovich Ramoneda, Estanislao Benito
dc.contributor.author
Richarte, Martín Gustavo
dc.date.available
2017-05-12T18:32:25Z
dc.date.issued
2010-05
dc.identifier.citation
Herscovich Ramoneda, Estanislao Benito; Richarte, Martín Gustavo; Black holes in Einstein–Gauss–Bonnet gravity with a string cloud background; Elsevier Science; Physics Letters B; 689; 4-5; 5-2010; 192-200
dc.identifier.issn
0370-2693
dc.identifier.uri
http://hdl.handle.net/11336/16395
dc.description.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.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject
Einstein-Gauss-Bonnet Gravity
dc.subject
String Cloud Model
dc.subject
Black Holes
dc.subject
5-Dimension
dc.subject.classification
Física de Partículas y Campos
dc.subject.classification
Ciencias Físicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Black holes in Einstein–Gauss–Bonnet gravity with a string cloud background
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-05-11T20:58:34Z
dc.journal.volume
689
dc.journal.number
4-5
dc.journal.pagination
192-200
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Herscovich Ramoneda, Estanislao Benito. Universität Paderborn; Alemania. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Richarte, Martín Gustavo. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.journal.title
Physics Letters B
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.physletb.2010.04.065
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0370269310005514
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