Is a classical description of stable non-BPS D-branes possible?
Abstract
We study the classical geometry produced by a stack of stable (i.e. tachyon free) non-BPS D-branes present in K3 compactifications of type II string theory. This classical representation is derived by solving the equations of motion describing the low-energy dynamics of the supergravity fields which couple to the non-BPS state. Differently from what expected, this configuration displays a singular behaviour: the space-time geometry has a repulson-like singularity. This fact suggests that the simplest setting, namely a set of coinciding non-interacting D-branes, is not acceptable. We finally discuss the possible existence of other acceptable configurations corresponding to more complicated bound states of these non-BPS branes.
Keywords
Cite
@article{arxiv.hep-th/0007097,
title = {Is a classical description of stable non-BPS D-branes possible?},
author = {M. Bertolini and P. Di Vecchia and M. Frau and A. Lerda and R. Marotta and R. Russo},
journal= {arXiv preprint arXiv:hep-th/0007097},
year = {2009}
}
Comments
Latex file: 41 pages, 5 figures; some minor corrections and references added