Multiparticle contributions to the celestial OPE
Abstract We start by defining two-particle operators that appear in celestial CFT. We then show how to compute their OPE coefficients with the known single-particle operators at tree level from multiparticle factorization channels, focusing on the leading contribution involving the two-particle stat...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2025-07-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | https://doi.org/10.1007/JHEP07(2025)178 |
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| author | Alfredo Guevara Yangrui Hu Sabrina Pasterski |
| author_facet | Alfredo Guevara Yangrui Hu Sabrina Pasterski |
| author_sort | Alfredo Guevara |
| collection | DOAJ |
| description | Abstract We start by defining two-particle operators that appear in celestial CFT. We then show how to compute their OPE coefficients with the known single-particle operators at tree level from multiparticle factorization channels, focusing on the leading contribution involving the two-particle states. These factorization channels only give us single-particle exchanges. To extract the multiparticle exchanges, we look at the MHV ¯ $$ \overline{\textrm{MHV}} $$ gluon amplitudes and show how non-factorization channels contribute to two-particle terms in the single-helicity sector. This is a first step towards systematically computing the full celestial OPE. |
| format | Article |
| id | doaj-art-8fb7a6a394cf4bfba7b8d0139c1328e8 |
| institution | Kabale University |
| issn | 1029-8479 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj-art-8fb7a6a394cf4bfba7b8d0139c1328e82025-08-20T03:42:37ZengSpringerOpenJournal of High Energy Physics1029-84792025-07-012025712210.1007/JHEP07(2025)178Multiparticle contributions to the celestial OPEAlfredo Guevara0Yangrui Hu1Sabrina Pasterski2Center for the Fundamental Laws of Nature, Harvard UniversityPerimeter Institute for Theoretical PhysicsPerimeter Institute for Theoretical PhysicsAbstract We start by defining two-particle operators that appear in celestial CFT. We then show how to compute their OPE coefficients with the known single-particle operators at tree level from multiparticle factorization channels, focusing on the leading contribution involving the two-particle states. These factorization channels only give us single-particle exchanges. To extract the multiparticle exchanges, we look at the MHV ¯ $$ \overline{\textrm{MHV}} $$ gluon amplitudes and show how non-factorization channels contribute to two-particle terms in the single-helicity sector. This is a first step towards systematically computing the full celestial OPE.https://doi.org/10.1007/JHEP07(2025)178Duality in Gauge Field TheoriesScattering Amplitudes |
| spellingShingle | Alfredo Guevara Yangrui Hu Sabrina Pasterski Multiparticle contributions to the celestial OPE Journal of High Energy Physics Duality in Gauge Field Theories Scattering Amplitudes |
| title | Multiparticle contributions to the celestial OPE |
| title_full | Multiparticle contributions to the celestial OPE |
| title_fullStr | Multiparticle contributions to the celestial OPE |
| title_full_unstemmed | Multiparticle contributions to the celestial OPE |
| title_short | Multiparticle contributions to the celestial OPE |
| title_sort | multiparticle contributions to the celestial ope |
| topic | Duality in Gauge Field Theories Scattering Amplitudes |
| url | https://doi.org/10.1007/JHEP07(2025)178 |
| work_keys_str_mv | AT alfredoguevara multiparticlecontributionstothecelestialope AT yangruihu multiparticlecontributionstothecelestialope AT sabrinapasterski multiparticlecontributionstothecelestialope |