Graviton absorption by non-BPS branes

Authors
Citation
P. Brax, Graviton absorption by non-BPS branes, PHYS LETT B, 506(3-4), 2001, pp. 369-376
Citations number
20
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS B
ISSN journal
03702693 → ACNP
Volume
506
Issue
3-4
Year of publication
2001
Pages
369 - 376
Database
ISI
SICI code
0370-2693(20010510)506:3-4<369:GABNB>2.0.ZU;2-Y
Abstract
We consider the behaviour of neutral non-BPS branes probed by scalars and g ravitons. We show that the naked singularity of the non-BPS branes is a rep ulson absorbing no incoming radiation. The naked singularity is surrounded by an infinite potential well breaking the unitarity of the scattering S-ma trix. We compute the absorption cross section which is infrared divergent. In particular this confirms that gravity does not decouple for the non-BPS branes. (C) 2001 Elsevier Science B.V. All rights reserved.