Differential equations for tree--level cosmological correlators with massive states
Fuente:
arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866908536208883712 |
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| author | Gasparotto, Federico Mazloumi, Pouria Xu, Xiaofeng |
| author_facet | Gasparotto, Federico Mazloumi, Pouria Xu, Xiaofeng |
| contents | We study mathematical aspects concerning two site tree-level cosmological correlators with massive internal and external states in a de Sitter universe. We employ integration by parts identities, (relative) twisted cohomology and the method of differential equations. We explicitly express the internally massive, externally conformally coupled correlator as a power series with respect to a small mass parameter, where the various terms in the series are given by multiple polylogarithms. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_05632 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Differential equations for tree--level cosmological correlators with massive states Gasparotto, Federico Mazloumi, Pouria Xu, Xiaofeng High Energy Physics - Theory General Relativity and Quantum Cosmology We study mathematical aspects concerning two site tree-level cosmological correlators with massive internal and external states in a de Sitter universe. We employ integration by parts identities, (relative) twisted cohomology and the method of differential equations. We explicitly express the internally massive, externally conformally coupled correlator as a power series with respect to a small mass parameter, where the various terms in the series are given by multiple polylogarithms. |
| title | Differential equations for tree--level cosmological correlators with massive states |
| topic | High Energy Physics - Theory General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2411.05632 |