D-instantons and Closed String Tachyons in Misner Space
High Energy Physics - Theory
2011-10-04 v2
Abstract
We investigate closed string tachyon condensation in Misner space, a toy model for big bang universe. In Misner space, we are able to condense tachyonic modes of closed strings in the twisted sectors, which is supposed to remove the big bang singularity. In order to examine this, we utilize D-instanton as a probe. First, we study general properties of D-instanton by constructing boundary state and effective action. Then, resorting to these, we are able to show that tachyon condensation actually deforms the geometry such that the singularity becomes milder.
Cite
@article{arxiv.hep-th/0510129,
title = {D-instantons and Closed String Tachyons in Misner Space},
author = {Yasuaki Hikida and Ta-Sheng Tai},
journal= {arXiv preprint arXiv:hep-th/0510129},
year = {2011}
}
Comments
24 pages, 1 figure, minor changes