Calculation of Nonperturbative Terms in Open String Models
arXiv:hep-th/0112039 · doi:10.1016/S0550-3213(02)00286-9
Abstract
Nonperturbative corrections in type II string theory corresponding to Riemann surfaces with one boundary are calculated in several noncompact geometries of desingularized orbifolds. One of these models has a complicated phase structure which is explored. A general condition for integrality of the numerical invariants is discussed.