Comments on Half S-Branes
High Energy Physics - Theory
2009-11-10 v2
Abstract
Following hep-th/0305177, we write the boundary state of half S-brane in bosonic string theory as a grand canonical partition function of a unitary matrix model. From this representation, it follows that the annulus amplitude can be written as a grand canonical partition function of a unitary two-matrix model. We also show that the contribution of the exponentially growing couplings to the timelike oscillators can be resummed in a certain annulus amplitude.
Cite
@article{arxiv.hep-th/0308172,
title = {Comments on Half S-Branes},
author = {Kazumi Okuyama},
journal= {arXiv preprint arXiv:hep-th/0308172},
year = {2009}
}
Comments
27 pages, lanlmac; v2: reference added