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arXiv · hep-th/0611105

Covariant N=2 heterotic string in four dimensions

William D. Linch III·Brenno Carlini Vallilo
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Abstract

We construct a covariant formulation of the heterotic superstring on K3 times 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 form of N=2 supergravity which is intimately related to the N=1 old-minimal formulation. This formalism can be used to derive new descriptions of interacting projective superspace field theories using Berkovits' open string field theory and the the heterotic Berkovits-Okawa-Zwiebach construction.

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William D. Linch III, Brenno Carlini Vallilo. 2006-11-09. Covariant N=2 heterotic string in four dimensions. https://doi.org/10.1088/1126-6708%2F2007%2F03%2F082

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