On ℛ4 Terms and MHV Amplitudes in N=5,6 Supergravity Vacua of Type II Superstrings
We compute one-loop threshold corrections to ℛ4 terms in N=5,6 supergravity vacua of Type II superstrings. We then discuss nonperturbative 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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| Format: | Article |
| Language: | English |
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Hindawi Limited
2011-01-01
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| Series: | Advances in High Energy Physics |
| Online Access: | http://dx.doi.org/10.1155/2011/479038 |