Superstring limit of Yang-Mills theories
arXiv:1608.05331 · doi:10.1016/j.physletb.2016.09.032
Abstract
It was pointed out by Shifman and Yung that the critical superstring on , where is the resolved conifold, appears as an effective theory for a U(2) Yang-Mills-Higgs system with four fundamental Higgs scalars defined on , where is a two-dimensional Lorentzian manifold. Their Yang-Mills model supports semilocal vortices on with a moduli space . When the moduli of slowly moving thin vortices depend on the coordinates of , the vortex strings can be identified with critical fundamental strings. We show that similar results can be obtained for the low-energy limit of pure Yang-Mills theory on , where is a two-dimensional torus with a puncture . The solitonic vortices of Shifman and Yung then get replaced by flat connections. Various ten-dimensional superstring target spaces can be obtained as moduli spaces of flat connections on , depending on the choice of the gauge group. The full Green-Schwarz sigma model requires extending the gauge group to a supergroup and augmenting the action with a topological term.
1+11 pages, v2: minor corrections