Fractional Branes in Non-compact Type IIA Orientifolds
High Energy Physics - Theory
2009-11-11 v2
Abstract
We study fractional D-branes in the Type-IIA theory on a non-compact orientifold of the orbifold C^3/Z_3 in the boundary state formalism. We find that the fractional D0-branes of the orbifold theory become unstable due to the presence of a tachyon, while there is a stable D-instanton whose tachyon gets projected out. We propose that the D-instanton is obtained after tachyon condensation. We evidence this by calculating the Whitehead group of the Abelian category of objects corresponding to the boundary states as being isomorphic to Z_2.
Keywords
Cite
@article{arxiv.hep-th/0602135,
title = {Fractional Branes in Non-compact Type IIA Orientifolds},
author = {Jaydeep Majumder and Subir Mukhopadhyay and Koushik Ray},
journal= {arXiv preprint arXiv:hep-th/0602135},
year = {2009}
}
Comments
29 pages, Latex2e minor corrections. references updated. Version accepted in JHEP