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From: Mike Jr on 28 Mar 2010 11:53
Good paper on arXiv.

"We prove that a class of solutions to Einstein's equations---
originally discovered by G. C. McVittie in 1933---includes regular
black holes embedded in Friedman-Robertson-Walker cosmologies. If the
cosmology is dominated at late times by a positive cosmological
constant, the metric is regular everywhere on and outside the black
hole horizon and away from the big bang singularity, and the solutions
asymptote in the future and near the horizon to the Schwarzschild-de
Sitter geometry. For solutions without a positive cosmological
constant the would-be horizon is a weak null singularity."

http://arxiv.org/abs/1003.4777

--Mike Jr.


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