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Geometry and N=2 Exceptional Gauge Theories
We find the Seiberg-Witten geometry for four dimensional N=2 supersymmetric
E_6 gauge theories with massless fundamental hypermultiplets, by geometrically
embedding them in type II string theories compactified on Calabi-Yau
threefolds. The resulting geometry completely agrees with that of recent works,
which are based on the technique of N=1 confining phase superpotentials. We
also derive the Seiberg-Witten geometry for E_7 gauge theories with massive
fundamental hypermultiplets.Comment: 19 pages, 1 figure, Latex file; minor errors corrected and 1
reference adde
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