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

Abstract

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.

19 pages

References in corpus (5)

• Algebraic structures on parallel M2-branes
• Modeling Multiple M2's
• E7(7) constraints on counterterms in N=8 supergravity
• String predictions for near future colliders from one-loop scattering amplitudes around D-brane worlds
• Bound-states of D-branes in L-R asymmetric superstring vacua

Cited by in corpus (1)

• Uniformization, Unipotent Flows and the Riemann Hypothesis