Covariant N = 2 heterotic string in four dimensions

JOURNAL OF HIGH ENERGY PHYSICS, (2007)

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We construct a covariant formulation of the heterotic superstring on K3 x T-2 with manifest N = 2 supersymmetry. We show how projective superspace appears naturally in the hybrid formulation giving a ( partially) geometric interpretation of the harmonic parameter. The low-energy effective action for this theory is given by a non-standard ...更多

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