STABLE NON-BPS STATES IN STRING THEORY: A PEDAGOGICAL REVIEW
STABLE NON-BPS STATES IN STRING THEORY: A PEDAGOGICAL REVIEW
We present a pedagogical review of the stable non-BPS states in string theory which have recently attracted some attention in the literature. In particular, following the analysis of A. Sen, we discuss in detail the case of the stable non-BPS D-particle of Type I theory whose existence is predicted (and …