2002年11月
Tolman-Bondi collapse in scalar-tensor theories as a probe of gravitational memory
PHYSICAL REVIEW D
- ,
- ,
- 巻
- 66
- 号
- 10
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1103/PhysRevD.66.104023
- 出版者・発行元
- AMERICAN PHYSICAL SOC
In cosmological models with a varying gravitational constant, it is not clear whether primordial black holes preserve the value of G at their formation epoch. We investigate this question by using the Tolman-Bondi model to study the evolution of a background scalar field when a black hole forms from the collapse of dust in a flat Friedmann universe. Providing the back reaction of the scalar field on the metric can be neglected, we find that the value of the scalar field at the event horizon very quickly assumes the background cosmological value. This suggests that there is very little gravitational memory.
- リンク情報
- ID情報
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- DOI : 10.1103/PhysRevD.66.104023
- ISSN : 0556-2821
- Web of Science ID : WOS:000179679900048