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"... Corrections to the statistical entropy of five dimensional black holes This article has been downloaded from IOPscience. Please scroll down to see the full text article. JHEP06(2009)024 ..."

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Corrections to the statistical entropy of five dimensional black holes This article has been downloaded from IOPscience. Please scroll down to see the full text article. JHEP06(2009)024

### and field redefinitions

, 806

"... Higher derivative corrections to R-charged AdS5 black holes ..."

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### Microstate Dependence of Scattering from the D1-D5 System

, 812

"... We investigate the question of distinguishing between different microstates of the D1-D5 system with charges Q1 and Q5, by scattering with a supergravity mode which is a minimally coupled scalar in the leading supergravity approximation. The scattering is studied in the dual CFT description in the o ..."

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We investigate the question of distinguishing between different microstates of the D1-D5 system with charges Q1 and Q5, by scattering with a supergravity mode which is a minimally coupled scalar in the leading supergravity approximation. The scattering is studied in the dual CFT description in the orbifold limit for finite R, where R is the radius of the circle on which the D1 branes are wrapped. Even though the system has discrete energy levels for finite R, an absorption probability proportional to time is found when the ingoing beam has a finite width ∆E which is much larger than the inverse of the time scale T. When R∆E ≫ 1, the absorption crosssection is found to be independent of the microstate and identical to the leading semiclassical answer computed from the naive geometry. For smaller ∆E, the answer depends on the particular microstate, which we examine for typical as well as for atypical microstates and derive an upper bound for the leading correction for either a Lorentzian or a Gaussian energy profile of the incoming beam. When 1/R ≫ ∆E ≫ the average energy gap ( 1/(R √ Q1Q5) ), we find that in a typical state the bound is proportional to the area of the stretched horizon, Q1Q5, up to log(Q1Q5) terms. Furthermore, when the central energy in the incoming beam,

### bInstitute for Theoretical Physics and Spinoza Institute,

"... A comprehensive analysis is presented based exclusively on near-horizon data to determine the attractor equations and the entropy of BPS black holes and rings in five space-time dimensions, for a Lagrangian invariant under eight supersym-metries with higher-derivative couplings. For spinning black h ..."

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A comprehensive analysis is presented based exclusively on near-horizon data to determine the attractor equations and the entropy of BPS black holes and rings in five space-time dimensions, for a Lagrangian invariant under eight supersym-metries with higher-derivative couplings. For spinning black holes the results only partially agree with the results of previous work, where often additional input was used beyond the near-horizon behaviour. A number of discrepancies remains, for example, pertaining to small black holes and to large spinning black holes, which are related to the presence of the higher-derivative couplings. Arguments are pre-sented to explain some of them. For the black rings, the analysis is intricate due to the presence of Chern-Simons terms and due to the fact that the gauge fields are not globally defined. The contributions from the higher-derivative couplings take a systematic form in line with expectations based on a variety of arguments. ar X iv