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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Simplified gravitational collapse with an interacting vacuum energy density

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Author(s):
Perico, E. L. D. [1, 2] ; Lima, J. A. S. [2] ; Campos, M. [3]
Total Authors: 3
Affiliation:
[1] Univ Sao Paulo, Inst Fis, BR-05508090 Sao Paulo, SP - Brazil
[2] Univ Sao Paulo, Dept Astron, BR-05508900 Sao Paulo, SP - Brazil
[3] Univ Fed Roraima, Dept Fis, BR-69304000 Boa Vista, RR - Brazil
Total Affiliations: 3
Document type: Journal article
Source: GENERAL RELATIVITY AND GRAVITATION; v. 48, n. 1 JAN 2016.
Web of Science Citations: 0
Abstract

The gravitational collapse of a spherical core, in which the fluid component interact with a growing vacuum energy density, filling an homogeneous and isotropic geometry with an arbitrary curvature parameter, is investigated. The complete set of exact solutions for all values of the free parameters are obtained, and the influence of the curvature term on the collapsing time, black hole mass and other physical quantities are also discussed in detail. We show that for the same initial conditions the total black hole mass depends only on the effective matter density parameter (including the vacuum component). It is also shown that the analytical condition to form a black hole, i.e. the formation of an apparent horizon, is not altered by the contribution of the curvature terms, however, the remaining physical quantities are quantitatively modified. (AU)

FAPESP's process: 04/13668-0 - Cosmology in the era of precision: dark energy, dark matter and background cosmic radiation
Grantee:Jose Ademir Sales de Lima
Support Opportunities: Research Projects - Thematic Grants