The effective action of the heterotic string compactified on manifolds with SU(3) structure**Work supported by: DFG—The German Science Foundation, European RTN Program MRTN-CT-2004-503369 and the DAAD—the German Academic Exchange Service.

Abstract

We derive the N = 1 effective action of the heterotic string compactified on manifolds with SU(3) structure in the presence of background fluxes. We use a Kaluza–Klein reduction and compute the moduli dependence of the Kähler potential, the gauge kinetic function and the superpotential entirely from fermionic terms of the reduced action.