Black Hole Entropy and Renormalization
Abstract
Using a new regulator, we examine 't Hooft's approach for evaluating black hole entropy through a statistical-mechanical counting of states for a scalar field propagating outside the event horizon. We find that this calculation yields precisely the one-loop renormalization of the standard Bekenstein-Hawking formula, S= A/(4G). Thus our result provides evidence confirming a suggestion by Susskind and Uglum regarding black hole entropy.
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