We define the topological free energy for string compactifications, which is relevant for the discussion of perturbative as well as non-perturbative effects in string theory. This modulidependent functional, originating from the integration over massive string modes, is determined by automorphic functions of the target-space duality group. We explicitly construct these automorphic functions for symmetric orbifold and Calabi-Yau compactifications. © 1991 Elsevier Science Publishers B.V. All rights reserved.
Duality-invariant partition functions and automorphic superpotentials for (2,2) string compactifications
ZWIRNER, FABIO
1991
Abstract
We define the topological free energy for string compactifications, which is relevant for the discussion of perturbative as well as non-perturbative effects in string theory. This modulidependent functional, originating from the integration over massive string modes, is determined by automorphic functions of the target-space duality group. We explicitly construct these automorphic functions for symmetric orbifold and Calabi-Yau compactifications. © 1991 Elsevier Science Publishers B.V. All rights reserved.
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