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D-brane black holes: Large-N limit and the effective string description

Abstract

We address the derivation of the effective conformal field theory description of the 5-dimensional black hole, modelled by a collection of D1-and D5-branes, from the corresponding low energy U(Q{sub 1}) x U(Q{sub 5}) gauge theory. Finite horizon size at weak coupling requires both Q{sub 1} and Q{sub 5} to be large. We derive the results in the moduli space approximation (say for Q{sub 1} > Q{sub 5}) and appeal to supersymmetry to argue its validity beyond weak coupling. As a result of a combination of quenched Z{sub Q1} Wilson lines and a residual Weyl symmetry, the low-lying excitations of the U(Q{sub 1}) x U(Q{sub 5}) gauge theory are described by an effective N = 4 superconformal field theory with c = 6 in 1 + 1 dimensions, where the space is a circle of radius RQ{sub 1}Q{sub 5}. We also discuss the appearance of a marginal perturbation of the effective conformal field theory for large but finite values of Q{sub 5}. (author). 42 refs.
Authors:
Hassan, S F; [1]  Wadia, S R [2] 
  1. International Centre for Theoretical Physics, Trieste (Italy)
  2. Theoretical Physics Div., CERN, Geneva (Switzerland)
Publication Date:
Mar 01, 1997
Product Type:
Technical Report
Report Number:
IC-97/23; Hep-th-9703163.
Reference Number:
SCA: 662210; PA: AIX-28:055692; EDB-97:114059; SN: 97001834694
Resource Relation:
Other Information: PBD: Mar 1997
Subject:
66 PHYSICS; STRING MODELS; BLACK HOLES; CONFORMAL INVARIANCE; COUPLING; COUPLING CONSTANTS; SU GROUPS; SUPERSYMMETRY; WILSON LOOP
OSTI ID:
511823
Research Organizations:
International Centre for Theoretical Physics (ICTP), Trieste (Italy)
Country of Origin:
IAEA
Language:
English
Other Identifying Numbers:
Other: ON: DE97637900; TRN: XA9744563055692
Availability:
INIS; OSTI as DE97637900
Submitting Site:
INIS
Size:
14 p.
Announcement Date:
Sep 04, 1997

Citation Formats

Hassan, S F, and Wadia, S R. D-brane black holes: Large-N limit and the effective string description. IAEA: N. p., 1997. Web.
Hassan, S F, & Wadia, S R. D-brane black holes: Large-N limit and the effective string description. IAEA.
Hassan, S F, and Wadia, S R. 1997. "D-brane black holes: Large-N limit and the effective string description." IAEA.
@misc{etde_511823,
title = {D-brane black holes: Large-N limit and the effective string description}
author = {Hassan, S F, and Wadia, S R}
abstractNote = {We address the derivation of the effective conformal field theory description of the 5-dimensional black hole, modelled by a collection of D1-and D5-branes, from the corresponding low energy U(Q{sub 1}) x U(Q{sub 5}) gauge theory. Finite horizon size at weak coupling requires both Q{sub 1} and Q{sub 5} to be large. We derive the results in the moduli space approximation (say for Q{sub 1} > Q{sub 5}) and appeal to supersymmetry to argue its validity beyond weak coupling. As a result of a combination of quenched Z{sub Q1} Wilson lines and a residual Weyl symmetry, the low-lying excitations of the U(Q{sub 1}) x U(Q{sub 5}) gauge theory are described by an effective N = 4 superconformal field theory with c = 6 in 1 + 1 dimensions, where the space is a circle of radius RQ{sub 1}Q{sub 5}. We also discuss the appearance of a marginal perturbation of the effective conformal field theory for large but finite values of Q{sub 5}. (author). 42 refs.}
place = {IAEA}
year = {1997}
month = {Mar}
}