paper

Topological Reduction of 4D SYM to 2D --Models

arXiv:hep-th/9501096 · doi:10.1016/0550-3213(95)00242-K

Abstract

By considering a (partial) topological twisting of supersymmetric Yang-Mills compactified on a 2d space with `t Hooft magnetic flux turned on we obtain a supersymmetric -model in 2 dimensions. For N=2 SYM this maps Donaldson observables on products of two Riemann surfaces to quantum cohomology ring of moduli space of flat connections on a Riemann surface. For N=4 SYM it maps -duality to -duality for -models on moduli space of solutions to Hitchin equations.

30 pages, harvmac

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