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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| 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 |
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doaj-f0738c02b0834533a4f3b4e08600fcad2020-11-24T23:04:18ZengHindawi LimitedAdvances in High Energy Physics1687-73571687-73652011-01-01201110.1155/2011/479038479038On ℛ4 Terms and MHV Amplitudes in N=5,6 Supergravity Vacua of Type II SuperstringsMassimo Bianchi0Dipartimento di Fisica, INFN Sezione di Roma “Tor Vergata”, Università di Roma “Tor Vergata”, Via della Ricerca Scientifica, 00133 Roma, ItalyWe 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.http://dx.doi.org/10.1155/2011/479038 |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Massimo Bianchi |
| spellingShingle |
Massimo Bianchi On ℛ4 Terms and MHV Amplitudes in N=5,6 Supergravity Vacua of Type II Superstrings Advances in High Energy Physics |
| author_facet |
Massimo Bianchi |
| author_sort |
Massimo Bianchi |
| title |
On ℛ4 Terms and MHV Amplitudes in N=5,6 Supergravity Vacua of Type II Superstrings |
| title_short |
On ℛ4 Terms and MHV Amplitudes in N=5,6 Supergravity Vacua of Type II Superstrings |
| title_full |
On ℛ4 Terms and MHV Amplitudes in N=5,6 Supergravity Vacua of Type II Superstrings |
| title_fullStr |
On ℛ4 Terms and MHV Amplitudes in N=5,6 Supergravity Vacua of Type II Superstrings |
| title_full_unstemmed |
On ℛ4 Terms and MHV Amplitudes in N=5,6 Supergravity Vacua of Type II Superstrings |
| title_sort |
on ℛ4 terms and mhv amplitudes in n=5,6 supergravity vacua of type ii superstrings |
| publisher |
Hindawi Limited |
| series |
Advances in High Energy Physics |
| issn |
1687-7357 1687-7365 |
| publishDate |
2011-01-01 |
| description |
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. |
| url |
http://dx.doi.org/10.1155/2011/479038 |
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AT massimobianchi onr4termsandmhvamplitudesinn56supergravityvacuaoftypeiisuperstrings |
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