On R^4 terms and MHV amplitudes in N = 5,6 supergravity vacua of Type II superstrings

Details On R^4 terms and MHV amplitudes in N = 5,6 supergravity vacua of Type II superstrings On R^4 terms and MHV amplitudes in N = 5,6 supergravity vacua of Type II superstrings

2010-10-22

arxiv.org/abs/1010.4736v1

Physics

High Energy Physics

High Energy Physics - Theory

19 pages

Scientific paper

We compute one-loop threshold corrections to R^4 terms in N= 5,6 supergravity
vacua of Type II superstrings. We then discuss non-perturbative corrections
generated by asymmetric D-brane instantons. Finally we derive generating
functions for MHV amplitudes at tree level in N = 5, 6 supergravities.

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