(0,2) Landau-Ginzburg Models and Residues

Details (0,2) Landau-Ginzburg Models and Residues (0,2) Landau-Ginzburg Models and Residues

2009-02-23

arxiv.org/abs/0902.3908v3

JHEP 0909:118,2009

Physics

High Energy Physics

High Energy Physics - Theory

25 pages; typos fixed; published version

Scientific paper

10.1088/1126-6708/2009/09/118

We study the topological heterotic ring in (0,2) Landau-Ginzburg models without a (2,2) locus. The ring elements correspond to elements of the Koszul cohomology groups associated to a zero-dimensional ideal in a polynomial ring, and the computation of half-twisted genus zero correlators reduces to a map from the first non-trivial Koszul cohomology group to complex numbers. This map is a generalization of the local Grothendieck residue. The results may be applied to computations of Yukawa couplings in a heterotic compactification at a Landau-Ginzburg point.

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