Entropy in Black Hole Pair Production
D. Garfinkle, S. B. Giddings, A. Strominger
Abstract
Pair production of Reissner-Nordstrom black holes in a magnetic field can be described by a euclidean instanton. It is shown that the instanton amplitude contains an explicit factor of eA/4, where A is the area of the event horizon. This is consistent with the hypothesis that eA/4 measures the number of black hole states.
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