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Physical Interpretation Of Certain Strong Coupling Singularities

Edward Witten

hep-tharXiv:hep-th/9609159

Abstract

We interpret certain strong coupling singularities of the E8× E8 heterotic string on K3 in terms of exotic six-dimensional theories in which E8 is a gauge symmetry. These theories are closely related to theories obtained at small instanton singularities, which have E8 as a global symmetry.

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