Conformal cosmological black holes: Towards restoring determinism to Einstein theory

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dc.authorid0000-0003-4339-1489
dc.authorscopusid22934356600
dc.authorscopusid55881972400
dc.authorscopusid57203233802
dc.authorwosidKAZICI, Dilek/AAU-5630-2020
dc.contributor.authorHammad, Faycal
dc.contributor.authorÇiftçi, Dilek K.
dc.contributor.authorFaraoni, Valerio
dc.date.accessioned2022-05-11T14:29:34Z
dc.date.available2022-05-11T14:29:34Z
dc.date.issued2019
dc.departmentFakülteler, Fen Edebiyat Fakültesi, Fizik Bölümü
dc.description.abstractA widespread solution-generating technique of general relativity consists of conformally transforming known seed solutions. It is shown that these new solutions always solve the field equations of a pathological Brans-Dicke theory. However, when interpreted as effective Einstein equations, those field equations exhibit, in the case of a cosmological background, an induced imperfect fluid as an additional effective source besides the original sources of the seed solutions. As an application of this feature, the charged non-rotating Thakurta black hole, which is conformal to Reissner-Nordstrom, is used to demonstrate the fragility of the inner Cauchy horizon when this black hole is embedded in the universe (even accounting for the separation of black hole and Hubble scales). Furthermore, we show that the charged McVittie spacetime, although not conformal to any GR solution, represents a charged black hole embedded in a cosmological background with varying Hubble parameter that does not exhibit a real Cauchy horizon. These arguments speak in favor of restoring determinism to Einstein theory, which was questioned in recent research.
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK) through the Programme BIDEB-2219Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK); Namik Kemal UniversityNamik Kemal University; Natural Sciences and Engineering Research Council of CanadaNatural Sciences and Engineering Research Council of Canada (NSERC)CGIAR [2017-05388, 2016-03803]
dc.description.sponsorshipThe authors are grateful to the anonymous referee for the pertinent remarks that helped improve the clarity of the manuscript. DKC thanks the Scientific and Technological Research Council of Turkey (TUBITAK) for a postdoctoral fellowship through the Programme BIDEB-2219 and Namik Kemal University for support. FH and VF are supported by the Natural Sciences and Engineering Research Council of Canada (Grants No. 2017-05388 and No. 2016-03803), and all authors thank Bishop's University.
dc.identifier.doi10.1140/epjp/i2019-12796-5
dc.identifier.issn2190-5444
dc.identifier.issue10en_US
dc.identifier.scopus2-s2.0-85073238348
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.1140/epjp/i2019-12796-5
dc.identifier.urihttps://hdl.handle.net/20.500.11776/7043
dc.identifier.volume134
dc.identifier.wosWOS:000488506900001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthorÇiftçi, Dilek K.
dc.language.isoen
dc.publisherSpringer Heidelberg
dc.relation.ispartofEuropean Physical Journal Plus
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectStrong Cosmic Censorship
dc.subjectCauchy-Problem
dc.subjectMachs Principle
dc.subjectIsotropic Universe
dc.subjectScale-Invariance
dc.subjectPoint Mass
dc.subjectTensor
dc.subjectField
dc.subjectGravity
dc.subjectSpacetimes
dc.titleConformal cosmological black holes: Towards restoring determinism to Einstein theory
dc.typeArticle

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