ABSORPTION BY BRANES AND SCHWINGER TERMS IN THE WORLD VOLUME THEORY

Citation
Ss. Gubser et Ir. Klebanov, ABSORPTION BY BRANES AND SCHWINGER TERMS IN THE WORLD VOLUME THEORY, Physics letters. Section B, 413(1-2), 1997, pp. 41-48
Citations number
55
Journal title
ISSN journal
03702693
Volume
413
Issue
1-2
Year of publication
1997
Pages
41 - 48
Database
ISI
SICI code
0370-2693(1997)413:1-2<41:ABBAST>2.0.ZU;2-#
Abstract
We study how coincident Dirichlet 3-branes absorb incident gravitons p olarized along their world volume. We show that the absorption cross-s ection is determined by the central term in the correlator of two stre ss-energy tensors. The existence of a non-renormalization theorem for this central charge in four-dimensional N = 4 supersymmetric Yang-Mill s theories shows that the leading term at low energies in the absorpti on cross-section is not renormalized. This guarantees that the agreeme nt of the cross-section with semiclassical supergravity, found in earl ier work, survives all loop corrections. The connection between absorp tion of gravitons polarized along the brane and Schwinger terms in the stress-energy correlators of the world volume theory holds in general . We explore this connection to deduce some properties of the stress-e nergy tensor OPE's for 2-branes and 5-branes in 11 dimensions, as well as for 5-branes in 10 dimensions. (C) 1997 Elsevier Science B.V.