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Title: Black-hole entropy from supergravity superstrata states
Authors: Bena, Iosif
Shigemori, Masaki
Warner, Nicholas P.
Author's alias: 重森, 正樹
Keywords: Black Holes in String Theory
AdS-CFT Correspondence
Supergravity Models
Issue Date: 24-Oct-2014
Publisher: Springer Berlin Heidelberg
Journal title: Journal of High Energy Physics
Volume: 2014
Issue: 10
Thesis number: 140
Abstract: There are, by now, several arguments that superstrata, which represent D1-D5-P bound states that depend upon arbitrary functions of two variables and that preserve four supersymmetries, exist in string theory, and that their gravitational back-reaction results in smooth horizonless solutions. In this paper we examine the shape and density modes of the superstratum and give strong evidence that the back-reacted supergravity solution allows for fluctuation modes whose quantization reproduces the entropy growth of black holes as a function of the charges. In particular, we argue that the shape modes of the superstratum that lie purely within the non-compact space-time directions account for at least 1/√6 of the entropy of the D1-D5-P black hole and propose a way in which the rest of the entropy could be captured by superstratum fluctuations. We complete the picture by conjecturing a relationship between bound states of multiple superstrata and momentum excitations of different twisted sectors of the dual CFT.
Rights: The final publication is available under Open Accessat Springer via
DOI(Published Version): 10.1007/JHEP10(2014)140
Appears in Collections:Journal Articles

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