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Three Dimensional N=2 Gauge Theories and Degenerations of Calabi-Yau Four-Folds

Duiliu-Emanuel Diaconescu, Sergei Gukov

hep-tharXiv:hep-th/9804059

Abstract

Three dimensional N=2 gauge theories with arbitrary gauge group and fundamental flavors are engineered from degenerations of Calabi-Yau four-folds. We show how Coulomb and Higgs branches emerge in the geometric picture. The analysis of instanton generated superpotentials unravels interesting aspects of the five-brane effective action in M theory.

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