Graviton Absorption by Non-BPS Branes

Details Graviton Absorption by Non-BPS Branes Graviton Absorption by Non-BPS Branes

2001-01-12

arxiv.org/abs/hep-th/0101077v1

Phys.Lett. B506 (2001) 369-376

Physics

High Energy Physics

High Energy Physics - Theory

13 pages, Latex

Scientific paper

10.1016/S0370-2693(01)00205-2

We consider the behaviour of neutral non-BPS branes probed by scalars and gravitons. We show that the naked singularity of the non-BPS branes is a {\it repulson} absorbing no incoming radiation. The naked singularity is surrounded by an infinite potential well breaking the unitarity of the scattering S-matrix. We compute the absorption cross section which is infrared divergent. In particular this confirms that gravity does not decouple for the non-BPS branes.

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