N=1 and N=2 Super Yang-Mills theories from wrapped branes
High Energy Physics - Theory
2010-04-05 v2
Abstract
We consider supergravity solutions of D5 branes wrapped on supersymmetric 2-cycles and use them to discuss relevant features of four-dimensional N=1 and N=2 super Yang-Mills theories with gauge group SU(n). In particular in the N=1 case, using a gravitational dual of the gaugino condensate, we obtain the complete NSVZ beta-function. We also find non-perturbative corrections associated to fractional instantons with charge 2/n. These non-perturbative effects modify the running of the coupling constant which remains finite even at small scales in a way that resembles to the soft confinement scenario of QCD.
Keywords
Cite
@article{arxiv.hep-th/0205204,
title = {N=1 and N=2 Super Yang-Mills theories from wrapped branes},
author = {P. Di Vecchia and A. Lerda and P. Merlatti},
journal= {arXiv preprint arXiv:hep-th/0205204},
year = {2010}
}
Comments
Latex file, 30 pages; several references added