Boundary States for the Rolling D-branes in NS5 Background
Abstract
In this paper we construct the time dependent boundary states describing the ``rolling D-brane solutions'' in the NS5 background discovered recently by Kutasov by means of the classical DBI analysis. We first survey some aspects of non-compact branes in the NS5 background based on known boundary states in the N=2 Liouville theory. We consider two types of non-compact branes, one of which is BPS and the other is non-BPS but stable. Then we clarify how to Wick-rotate the non-BPS one appropriately. We show that the Wick-rotated boundary state realizes the correct trajectory of rolling D-brane in the classical limit, and leads to well behaved spectral densities of open strings due to the existence of non-trivial damping factors of energy. We further study the cylinder amplitudes and the emission rates of massive closed string modes.
Keywords
Cite
@article{arxiv.hep-th/0406173,
title = {Boundary States for the Rolling D-branes in NS5 Background},
author = {Yu Nakayama and Yuji Sugawara and Hiromitsu Takayanagi},
journal= {arXiv preprint arXiv:hep-th/0406173},
year = {2009}
}
Comments
25 pages, 2 figures, v2: typos corrected, reference added, v3: emission rates of closed strings corrected