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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Wiley
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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| _version_ | 1832566240670908416 |
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| author | Massimo Bianchi |
| author_facet | Massimo Bianchi |
| author_sort | Massimo Bianchi |
| collection | DOAJ |
| 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. |
| format | Article |
| id | doaj-art-f0738c02b0834533a4f3b4e08600fcad |
| institution | Kabale University |
| issn | 1687-7357 1687-7365 |
| language | English |
| publishDate | 2011-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in High Energy Physics |
| spelling | doaj-art-f0738c02b0834533a4f3b4e08600fcad2025-02-03T01:04:43ZengWileyAdvances 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 |
| spellingShingle | Massimo Bianchi On ℛ4 Terms and MHV Amplitudes in N=5,6 Supergravity Vacua of Type II Superstrings Advances in High Energy Physics |
| title | 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_short | 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 |
| url | http://dx.doi.org/10.1155/2011/479038 |
| work_keys_str_mv | AT massimobianchi onr4termsandmhvamplitudesinn56supergravityvacuaoftypeiisuperstrings |