Boosts, Schwarzschild black holes and absorption cross sections in M-theory

Das, Sumit R. ; Mathur, Samir D. ; Kalyana Rama, S. ; Ramadevi, P. (1998) Boosts, Schwarzschild black holes and absorption cross sections in M-theory Nuclear Physics B, 527 (1-2). pp. 187-204. ISSN 0550-3213

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D-dimensional neutral black strings wrapped on a circle are related to (D - 1)-dimensional charged black holes by boosts. We show that the boost has to be performed in the covering space and the boosted coordinate has to be compactified on a circle with a Lorentz contracted radius. Using this fact we show that the transition between Schwarzschild black holes to black p-branes observed recently in M-theory is the well-known black hole-black string transition viewed in a boosted frame. In a similar way the correspondence point where an excited string state goes over to a neutral black hole is mapped exactly to the correspondence point for black p-branes. In terms of the p-brane quantities, the equation of state for an excited string state becomes identical to that of a (3 + 1)-dimensional massless gas for all p. Finally, we show how boosts can be used to relate Hawking radiation rates. Using the known microscopic derivation of absorption by extremal 3-branes and near-extremal 5D holes with three large charges we provide a microscopic derivation of absorption of 0-branes by seven- and five-dimensional Schwarzschild black holes in a certain regime.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
ID Code:8704
Deposited On:28 Oct 2010 11:01
Last Modified:16 May 2016 18:38

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