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Near-extremal black hole entropy and fluctuating 3-branes. (English) Zbl 0925.83082

Summary: We discuss the known microscopic interpretations of the Bekenstein-Hawking entropy for configurations of intersecting M-branes. In some cases the entropy scales as that of a massless field theory on the intersection. A different situation, found for configurations which reduce to 1-charge \(D=5\) black holes or 2-charge \(D=4\) black holes, is explained by a gas of non-critical strings at their Hagedorn temperature. We further suggest that the entropy of configurations reducing to 1-charge \(D=4\) black holes is due to 3-branes moving within 5-branes.

MSC:

83E30 String and superstring theories in gravitational theory
83C57 Black holes
81T30 String and superstring theories; other extended objects (e.g., branes) in quantum field theory
81T20 Quantum field theory on curved space or space-time backgrounds

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