Tachyon condensation in unstable type I D-brane systems
High Energy Physics - Theory
2009-10-31 v2
Abstract
Type I string theory provides eight classes of unstable D-brane systems. We determine the gauge group and tachyon spectrum for each one, and thereby describe the gauge symmetry breaking pattern in the low-energy world-volume field theory. The topologies of the resulting coset vacuum manifolds are related to the real K-theory groups KO^{-n}, extending the known relations between the Type II classifying spaces BU and U and the complex K-theory groups K^0 and K^{-1}. We also comment on the role of the background D9-branes.
Keywords
Cite
@article{arxiv.hep-th/0009252,
title = {Tachyon condensation in unstable type I D-brane systems},
author = {O. Bergman},
journal= {arXiv preprint arXiv:hep-th/0009252},
year = {2009}
}
Comments
14 pages, LaTex; footnote regarding bosonic D-branes has been corrected, references added