Superstring elastic scattering at √s≥1019 GeV: the covariant loop calculus approach (original) (raw)

Nuclear Physics B, 1991

Abstract

We study quantum gravity by considering the elastic scattering of two on-shell string ground states in the large-s, fixed-t asymptotic limit. The amplitude is computed by means of the covariant loop calculus which turns out to be a powerful method in the study of such a Regge regime. The leading contribution in powers of s is shown to factorize at

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