S-Duality and Global Symmetries in N=2 Supersymmetric Field Theory

Details S-Duality and Global Symmetries in N=2 Supersymmetric Field Theory S-Duality and Global Symmetries in N=2 Supersymmetric Field Theory

1997-06-12

arxiv.org/abs/hep-th/9706095v1

Adv.Theor.Math.Phys.2:293-302,1998

Physics

High Energy Physics

High Energy Physics - Theory

10 pages, 1 figure

Scientific paper

S-dualities in scale invariant N=2 supersymmetric field theories are derived by embedding those theories in asymptotically free N=2 theories with higher rank gauge groups. S-duality transformations on the coupling of the scale invariant theory follow from global symmetries acting on the Coulomb branch of the higher rank theory. Since these global symmetries are exact in the asymptotically free theory, this shows that S-duality is an exact equivalence of N=2 theories and not just a property of their supersymmetric states.

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