Higher-Derivative Gravity in String Theory
高能物理 - 理论
2009-10-30 v1
摘要
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.
引用
@article{arxiv.hep-th/9605145,
title = {Higher-Derivative Gravity in String Theory},
author = {Kristin Forger and Burt A. Ovrut and Stefan J. Theisen and Daniel Waldram},
journal= {arXiv preprint arXiv:hep-th/9605145},
year = {2009}
}
备注
14 pages, 6 Postscript figures, latex and psfig