World-Sheet Corrections Via D-Instantons
高能物理 - 理论
2010-04-07 v1
摘要
We use a D-instanton or physical gauge approach to re-derive the heterotic string worldsheet instanton contribution to the superpotential in Calabi-Yau compactification. We derive an analogous formula for worldsheet instanton corrections to the moduli space metric in heterotic string or Type I compactification on a K3 surface. In addition, we give a global analysis of the phase of the worldsheet path integral of the heterotic string, showing precisely how the B-field must be interpreted.
引用
@article{arxiv.hep-th/9907041,
title = {World-Sheet Corrections Via D-Instantons},
author = {Edward Witten},
journal= {arXiv preprint arXiv:hep-th/9907041},
year = {2010}
}
备注
19 pp