A Caltech Library Service

Precision microstate counting of small black rings

Dabholkar, Atish and Iizuka, Norihiro and Iqubal, Ashik and Shigemori, Masaki (2006) Precision microstate counting of small black rings. Physical Review Letters, 96 (7). Art. No. 071601. ISSN 0031-9007. doi:10.1103/PhysRevLett.96.071601.

See Usage Policy.


Use this Persistent URL to link to this item:


We examine certain two-charge supersymmetric states with spin in five-dimensional string theories which can be viewed as small black rings when the gravitational coupling is large. Using the 4D-5D connection, these small black rings correspond to four-dimensional nonspinning small black holes. Using this correspondence, we compute the degeneracy of the microstates of the small black rings exactly and show that it is in precise agreement with the macroscopic degeneracy to all orders in an asymptotic expansion. Furthermore, we analyze the five-dimensional small black ring geometry and show qualitatively that the Regge bound arises from the requirement that closed timelike curves be absent.

Item Type:Article
Related URLs:
URLURL TypeDescription
Additional Information:©2006 The American Physical Society. Received 4 December 2005; published 23 February 2006. We are very grateful to Ashoke Sen for numerous illuminating discussions and collaboration on Ref. [44]. A.D. would like to thank the high energy group at ASICTP, Trieste for their hospitality where part of this work was completed. The work of M. S. was supported in part by Department of Energy Grant No. DE-FG03-92ER40701 and the Sherman Fairchild Foundation.
Subject Keywords:string theory; black holes; supersymmetry
Issue or Number:7
Record Number:CaltechAUTHORS:DABprl06
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:4497
Deposited By: Lindsay Cleary
Deposited On:25 Aug 2006
Last Modified:08 Nov 2021 20:17

Repository Staff Only: item control page