Cold Black Holes in the Einstein-Scalar Field System
General Relativity and Quantum Cosmology
2007-05-23 v1
Abstract
We study Einstein gravity coupled to a massless scalar field in a static spherically symmetric space-time in four dimensions. Black hole solutions exist when the kinetic energy of the scalar field is negative, that is, for a phantom field. These ``scalar black holes'' have an infinite horizon area and zero temperature. They are related through a conformal transformation with similar objects in the Jordan frames of scalar-tensor theories of gravity. The thermodynamical properties of these solutions are discussed. It is proved that any \ssph \bhs with an infinite horizon area have zero Hawking temperature.
Keywords
Cite
@article{arxiv.gr-qc/0604055,
title = {Cold Black Holes in the Einstein-Scalar Field System},
author = {K. A. Bronnikov and J. C. Fabris and N. Pinto-Neto and M. E. Rodrigues},
journal= {arXiv preprint arXiv:gr-qc/0604055},
year = {2007}
}
Comments
Latex file, 9 pages, no figure. To appear in the "Prof. Jos\'e Pl\'{\i}nio Baptista Festschrift"