Comments on Supergravity Description of S-branes

Preprint

19 May 2003

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.hep-th/0305055

Abstract

This is a note on the coupled supergravity-tachyon matter system, which has been earlier proposed as a candidate for the effective space-time description of S-branes. In particular, we study an ansatz with the maximal ISO(p+1)xSO(8-p,1) symmetry, for general brane dimensionality p and homogeneous brane distribution in transverse space \rho_\perp. A simple application of singularity theorems shows that (for p \le 7) the most general solution with these symmetries is always singular. (This invalidates a recent claim in the literature.) We include a few general comments about the possibility of describing the decay of unstable D-branes in purely gravitational terms.

Keywords

SUPERGRAVITY DESCRIPTION
SUPERGRAVITY TACHYON
COUPLED SUPERGRAVITY
TACHYON MATTER
MATTER SYSTEM
GRAVITATIONAL
SINGULARITY
BRANES
ISO

All Related Versions

Version 1, 2003-05-07, ArXiv
Version 2, 2003-05-15, ArXiv
Version 3, 2003-05-19, ArXiv
Published version: Journal of High Energy Physics, 2003 (05), 069.

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