期刊
GENERAL RELATIVITY AND GRAVITATION
卷 40, 期 8, 页码 1593-1602出版社
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10714-007-0562-8
关键词
black holes; cosmology; hawking radiation; phantom energy
资金
- CNPq (Brazil)
- CNRS
- Fapesp Agency
In this work we extend previous work on the evolution of a primordial black hole (PBH) to address the presence of a dark energy component with a super-negative equation of state as a background, investigating the competition between the radiation accretion, the Hawking evaporation and the phantom accretion, the latter two causing a decrease on black hole mass. It is found that there is an instant during the matter-dominated era after which the radiation accretion becomes negligible compared to the phantom accretion. The Hawking evaporation may become important again depending on a mass threshold. The evaporation of PBHs is quite modified at late times by these effects, but only if the generalized second law of thermodynamics is violated.
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