Covariant N=2 heterotic string in four dimensions

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.

11+3 pages

References in corpus (4)

• String loop corrected hypermultiplet moduli spaces
• Hypermultiplets and Topological Strings
• 6D Supersymmetry, Projective Superspace and 4D, N=1 Superfields
• 6D Supersymmetric Nonlinear Sigma-Models in 4D, N=1 Superspace

Cited by in corpus (5)

• Six-dimensional Supergravity and Projective Superfields
• Five-dimensional N = 1 AdS superspace: Geometry, off-shell multiplets and dynamics
• Generalized Kaehler Potentials from Supergravity
• Membrane instantons from mirror symmetry
• The Covariant Superstring on K3