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Type: Artigo
Title: Are Black Holes In An Ekpyrotic Phase Possible?
Author: Neves
J. C. S.
Abstract: The ekpyrotic phase (a slow contraction cosmic phase before the current expansion phase) manages to solve the main problems of the standard cosmology by means of a scalar field interpreted as a cosmic fluid in the Friedmann equation. Moreover, this phase generates a nearly scale-invariant spectrum of perturbations in agreement with the latest data. Then, the ekpyrotic mechanism is a serious possibility to the inflationary model. In this work-by using the approach of deforming metrics at linear level-we point out that it is impossible to generate a black hole with spherical symmetry supported by an isotropic fluid in this cosmological scenario.
Subject: Black Holes
Editor: Springer
Citation: Astrophysics And Space Science. Springer, v. 361, p. 281 - 281, 2016.
Rights: fechado
Identifier DOI: 10.1007/s10509-016-2867-0
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

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