The Hawking temperature of expanding cosmological black holes

Details The Hawking temperature of expanding cosmological black holes The Hawking temperature of expanding cosmological black holes

2007-10-10

arxiv.org/abs/0710.2122v2

Phys.Rev.D76:104042,2007

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

5 latex pages, to appear in Phys. Rev. D. Some references added

Scientific paper

10.1103/PhysRevD.76.104042

In the context of a debate on the correct expression of the Hawking
temperature of an expanding cosmological black hole, we show that the correct
expression in terms of the Hawking-Hayward quasi-local energy m of the hole is
T=1/(8\pi m(t)). This expression holds for comoving black holes and agrees with
a recent proposal by Saida, Harada, and Maeda.

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