Gravitational entropy of wormholes with exotic matter and in galactic halos

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dc.contributor.authorLima, R. de C. [UNESP]
dc.contributor.authorNogales, Jose A. C.
dc.contributor.authorPereira, S. H. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal de Lavras (UFLA)
dc.date.accessioned2020-12-10T19:53:00Z
dc.date.available2020-12-10T19:53:00Z
dc.date.issued2020-01-01
dc.description.abstractIn this work, we study and compare the features of gravitational entropy near the throat of transversable wormholes formed by exotic matter and wormholes in galactic halos. We have verified that gravitational entropy and entropy density of these wormholes in regions near their throats are indistinguishable for objects of same throat, despite the fact that they are described by different metrics and by distinct energy-momentum tensors. We have found that the gravitational entropy density diverges near the throat for both cases, probably due to a nontrivial topology at this point, however, allowing the interesting interpretation that a maximum flux of information can be carried through the throat of these wormholes. In addition, we have found that both are endowed with an entropic behaviour similar to Hawking-Bekenstein's entropy of nonrotating and null charge black holes.en
dc.description.affiliationUniv Estadual Paulista UNESP, Dept Fis & Quim, Fac Engn, Av Dr Ariberto Pereira da Cunha 333, BR-12516410 Guaratingueta, SP, Brazil
dc.description.affiliationUniv Fed Lavras UFLA, Dept Fis, Caixa Postal 3037, BR-37200000 Lavras, MG, Brazil
dc.description.affiliationUnespUniv Estadual Paulista UNESP, Dept Fis & Quim, Fac Engn, Av Dr Ariberto Pereira da Cunha 333, BR-12516410 Guaratingueta, SP, Brazil
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdCAPES: 001
dc.description.sponsorshipIdCNPq: 303583/2018-5
dc.description.sponsorshipIdCNPq: 400924/2016-1
dc.format.extent15
dc.identifierhttp://dx.doi.org/10.1142/S0218271820500157
dc.identifier.citationInternational Journal Of Modern Physics D. Singapore: World Scientific Publ Co Pte Ltd, v. 29, n. 2, 15 p., 2020.
dc.identifier.doi10.1142/S0218271820500157
dc.identifier.issn0218-2718
dc.identifier.urihttp://hdl.handle.net/11449/196687
dc.identifier.wosWOS:000519726200007
dc.language.isoeng
dc.publisherWorld Scientific Publ Co Pte Ltd
dc.relation.ispartofInternational Journal Of Modern Physics D
dc.sourceWeb of Science
dc.subjectWormholes
dc.subjectgravitational entropy
dc.subjectgalactic halos
dc.titleGravitational entropy of wormholes with exotic matter and in galactic halosen
dc.typeArtigo
dcterms.rightsHolderWorld Scientific Publ Co Pte Ltd

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