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03 November 2024
 
  » arxiv » hep-th/9605145

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Higher-Derivative Gravity in String Theory
Kristin Forger ; Burt A. Ovrut ; Stefan J. Theisen ; Daniel Waldram ;
Date 21 May 1996
Journal Phys.Lett. B388 (1996) 512-520
AbstractWe 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.
Source arXiv, hep-th/9605145
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