Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1996-04-15
Nucl.Phys. B476 (1996) 133-174
Physics
High Energy Physics
High Energy Physics - Theory
LaTeX, 60 pages, 2 PS figures
Scientific paper
10.1016/0550-3213(96)00349-5
We show that certain heterotic string amplitudes are given in terms of correlators of the twisted topological (2,0) SCFT, corresponding to the internal sector of the N=1 spacetime supersymmetric background. The genus g topological partition function $F^g$ corresponds to a term in the effective action of the form $W^{2g}$, where W is the gauge or gravitational superfield. We study also recursion relations related to holomorphic anomalies, showing that, contrary to the type II case, they involve correlators of anti-chiral superfields. The corresponding terms in the effective action are of the form $W^{2g}\Pi^n$, where $\Pi$ is a chiral superfield obtained by chiral projection of a general superfield. We observe that the structure of the recursion relations is that of N=1 spacetime supersymmetry Ward identity. We give also a solution of the tree level recursion relations and discuss orbifold examples.
Antoniadis Ignatios
Gava Edi
Narain Kumar S.
Taylor Tomasz R.
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