paper

Topological Amplitudes in String Theory

arXiv:hep-th/9307158 · doi:10.1016/0550-3213(94)90617-3

Abstract

We show that certain type II string amplitudes at genus are given by the topological partition function discussed recently by Bershadsky, Cecotti, Ooguri and Vafa. These amplitudes give rise to a term in the four-dimensional effective action of the form , where is the chiral superfield of supergravitational multiplet. The holomorphic anomaly of is related to non-localities of the effective action due to the propagation of massless states. This result generalizes the holomorphic anomaly of the one loop case which is known to lead to non-harmonic gravitational couplings.

31 pages (LATEX) + 2 figures (available upon request as PS file or hardcopy), NUB-3071 - IC/93/202 - CPTH-A258.0793

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