2021 Impact factor 4.991
Particles and Fields
Eur. Phys. J. C 13, 641-646
DOI 10.1007/s100520000298

Black string entropy from anomalous D-brane couplings

D.D. Song - R.J. Szabo

Department of Physics, University of Oxford, Oxford OX1 3PU, UK

Received: 9 May 1999 / Published online: 17 March 2000 - © Springer-Verlag 2000

The quantum corrections to the counting of statistical entropy for the 5+1-dimensional extremal black string in type-IIB supergravity with two observers are studied using anomalous Wess-Zumino actions for the corresponding intersecting D-brane description. The electric-magnetic duality symmetry of the anomalous theory implies a new symmetry between D-string and D-fivebrane sources and renders opposite sign for the RR charge of one of the intersecting D-branes relative to that of the black string. The electric-magnetic symmetric Hilbert space decomposes into subspaces associated with interior and exterior regions and it is shown that, for an outside observer, the expectation value of a horizon area operator agrees with the deviation of the classical horizon area in going from extremal to near-extremal black strings.

Copyright Società Italiana di Fisica, Springer-Verlag 2000