The rapid acceleration of the universe’s expansion continues to challenge our understanding of fundamental physics. Why the ...
A physicist investigating black holes has found that, in an expanding universe, Einstein's equations require that the rate of the universe's expansion at the event horizon of every black hole must be ...
Proceedings of the National Academy of Sciences of the United States of America, Vol. 106, No. 34 (Aug. 25, 2009), pp. 14213-14218 (6 pages) We derive a system of three coupled equations that ...
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