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Superconformal Fixed Points with E_n Global Symmetry
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We obtain the elliptic curve and the Seiberg-Witten differential for an N=2 superconformal field theory which has an E8 global symmetry at the strong coupling point tau=c^pi i/3. The differential has 120 poles corresponding to half the charged states in the fundamental representation of E8, with the other half living on the other sheet. Using this theory, we flow down to E7, E6 and D4. A new feature is a gamma SW for these theories based on their adjoint representations. We argue that these theories have different physics than those with gammaSW built from the fundamental representational
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http://www.arxiv.org/abs/hep-th/9610076
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