Higher-derivative gravity in string theory

Förger, Kristin; Ovrut, Burt A.; Theisen, Stefan; Waldram, Daniel

doi:10.1016/S0370-2693(96)01175-6

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Higher-derivative gravity in string theory

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Theisen, Stefan
Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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Förger, K., Ovrut, B. A., Theisen, S., & Waldram, D. (1996). Higher-derivative gravity in string theory. Physics Letters B, 388(3), 512-520. doi:10.1016/S0370-2693(96)01175-6.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0013-5B1A-B

Abstract

We explicitly extract the structure of higher-derivative curvature-squared terms at genus 0 and 1 in the d = 4 heterotic string effective action compactified on symmetric orbifolds by computing on-shell S-matrix superstring amplitudes. In particular, this is done within the context of calculating the graviton 4-point amplitude. We also discuss the moduli-dependent gravitational threshold corrections to the coupling associated with the CP even quadratic curvature terms.