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String theory dualities and supergravity divergences
Green, Michael B.; Russo, J. G. (Jorge Guillermo); Vanhove, Pierre
Universitat de Barcelona
We demonstrate how duality invariance of the low energy expansion of the four-supergraviton amplitude in type II string theory determines the precise coefficients of multiloop logarithmic ultraviolet divergences of maximal supergravity in various dimensions. This is illustrated by the explicit moduli-dependence of terms of the form ¿2k R4, with k ¿ 3, in the effective action. Furthermore, we show that in the supergravity limit the perturbative contributions are swamped by an accumulation of non-perturbative effects of zero-action instantons.
2012-03-02
Física nuclear
Partícules (Física nuclear)
Nuclear physics
Particles (Nuclear physics)
cc-by-nc, (c) Green et al., 2010
http://creativecommons.org/licenses/by-nc/2.5/
Article
Springer; Scuola Internazionale Superiore di Studi Avanzati (SISSA)
         

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