D-branes in type I string theory
arXiv:hep-th/0012167 · doi:10.1002/1521-3978(200105)49:4/6<503::AID-PROP503>3.3.CO;2-T
Abstract
We review the boundary state description of D-branes in type I string theory and show that the only stable non-BPS configurations are the D-particle and the D-instanton. We also compute the gauge and gravitational interactions of the non-BPS D-particles and compare them with the interactions of the dual non-BPS states of the heterotic string, finding complete agreement.
8 pages, no figures, needs buckow.sty, contribution to the proceedings of the workshop "The quantum structure of spacetime and the geometric nature of fundamental interactions", Berlin, october 2000 Some references added