Backreaction in Closed String Tachyon Condensation
High Energy Physics - Theory
2009-12-07 v3
Abstract
We consider backreaction due to production of massless strings in the background of a condensing closed string tachyon. Working in the region of weak tachyon, we find the modified equations of motion for massless strings with conformal perturbation theory. We solve for the positive and negative frequency modes and estimate the backreaction on the background dilaton. In large (supercritical) dimensions, we find that the backreaction can be significant in a large region of spacetime. We work with the bosonic string, but we expect these results to carry over into the heterotic case.
Cite
@article{arxiv.0805.0570,
title = {Backreaction in Closed String Tachyon Condensation},
author = {Andrew R. Frey},
journal= {arXiv preprint arXiv:0805.0570},
year = {2009}
}
Comments
15 pg, 2 figures; v2. corrected eq of motion (does not substantially change conclusions), other minor changes; v3. minor changes, to be published in JHEP