Heterotic Strings with Torsion

Details Heterotic Strings with Torsion Heterotic Strings with Torsion

2002-09-09

arxiv.org/abs/hep-th/0209077v4

JHEP 0211 (2002) 006

Physics

High Energy Physics

High Energy Physics - Theory

37 pages, No figures, Harvmac; v4: Some notations fixed and typos corrected, final version to appear in JHEP

Scientific paper

10.1088/1126-6708/2002/11/006

In this paper we describe the heterotic dual of the type IIB theory compactified to four dimensions on a toroidal orientifold in the presence of fluxes. The type IIB background is most easily described in terms of an M-theory compactification on a four-fold. The heterotic dual is obtained by performing a series of U-dualities. We argue that these dualities preserve supersymmetry and that the supergravity description is valid after performing them. The heterotic string is compactified on a manifold that is no longer Kahler and has torsion. These manifolds have to satisfy a number of constraints, for example, existence of an holomorphic three-form, size limits, torsional equations etc. We give an explicit form of the background and study the constraints associated to them.

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