Perturbative Prepotential and Monodromies in N=2 Heterotic Superstring
Abstract
We discuss the prepotential describing the effective field theory of N=2 heterotic superstring models. At the one loop-level the prepotential develops logarithmic singularities due to the appearance of charged massless states at particular surfaces in the moduli space of vector multiplets. These singularities modify the classical duality symmetry group which now becomes a representation of the fundamental group of the moduli space minus the singular surfaces. For the simplest two-moduli case, this fundamental group turns out to be a certain braid group and we determine the resulting full duality transformations of the prepotential, which are exact in perturbation theory.
Keywords
Cite
@article{arxiv.hep-th/9504034,
title = {Perturbative Prepotential and Monodromies in N=2 Heterotic Superstring},
author = {I. Antoniadis and S. Ferrara and E. Gava and K. S. Narain and T. R. Taylor},
journal= {arXiv preprint arXiv:hep-th/9504034},
year = {2009}
}
Comments
39 pages, LaTeX, no figures; section 6 expanded to include explicit construction of the monodromy group in a (4,0) orbifold example