Cold black holes and conformal continuations

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dc.creatorBronnikov, K. A.
dc.creatorChernakova, M. S.
dc.creatorFabris, J. C.
dc.creatorPinto-Neto, N.
dc.creatorRodrigues, M. E.
dc.date2006-09-20
dc.date.accessioned2026-07-07T11:26:28Z
dc.date.available2026-07-07T11:26:28Z
dc.descriptionWe study Einstein gravity minimally coupled to a scalar field in a static, spherically symmetric space-time in four dimensions. Black hole solutions are shown to exist for a phantom scalar field whose kinetic energy is negative. These ``scalar black holes'' have an infinite horizon area and zero Hawking temperature and are termed ``cold black holes'' (CBHs). The relevant explicit solutions are well-known in the massless case (the so-called anti-Fisher solution), and we have found a particular example of a CBH with a nonzero potential $V(ϕ)$. All CBHs with $V(ϕ) \not \equiv 0$ are shown to behave near the horizon quite similarly to those with a massless field. The above solutions can be converted by a conformal transformation to Jordan frames of a general class of scalar-tensor theories of gravity, but CBH horizons in one frame are in many cases converted to singularities in the other, which gives rise to a new type of conformal continuation.
dc.description15 pages, latex
dc.identifierhttps://arxiv.org/abs/gr-qc/0609084
dc.identifierhttp://arxiv.org/abs/gr-qc/0609084
dc.identifierInt.J.Mod.Phys.D17:25-42,2008
dc.identifierdoi:10.1142/S0218271808011845
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/195838
dc.subjectGeneral Relativity and Quantum Cosmology
dc.titleCold black holes and conformal continuations
dc.typetext

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