From amplitudes to contact cosmological correlators
| Autor: | Dong-Gang Wang, Enrico Pajer, James Bonifacio |
|---|---|
| Přispěvatelé: | Bonifacio, James [0000-0001-6633-7341], Apollo - University of Cambridge Repository |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
High Energy Physics - Theory
Nuclear and High Energy Physics Cosmology and Nongalactic Astrophysics (astro-ph.CO) Lorentz transformation Scalar (mathematics) FOS: Physical sciences General Relativity and Quantum Cosmology (gr-qc) Astrophysics::Cosmology and Extragalactic Astrophysics QC770-798 General Relativity and Quantum Cosmology Theoretical physics symbols.namesake De Sitter universe Nuclear and particle physics. Atomic energy. Radioactivity Quantum Physics Spacetime Unitarity Graviton Effective Field Theories Cosmology of Theories beyond the SM High Energy Physics - Theory (hep-th) symbols Trispectrum Regular Article - Theoretical Physics Astrophysics - Cosmology and Nongalactic Astrophysics |
| Zdroj: | Journal of High Energy Physics, Vol 2021, Iss 10, Pp 1-33 (2021) Journal of High Energy Physics |
| ISSN: | 1029-8479 |
| Popis: | Our understanding of quantum correlators in cosmological spacetimes, including those that we can observe in cosmological surveys, has improved qualitatively in the past few years. Now we know many constraints that these objects must satisfy as consequences of general physical principles, such as symmetries, unitarity and locality. Using this new understanding, we derive the most general scalar four-point correlator, i.e., the trispectrum, to all orders in derivatives for manifestly local contact interactions. To obtain this result we use techniques from commutative algebra to write down all possible scalar four-particle amplitudes without assuming invariance under Lorentz boosts. We then input these amplitudes into a contact reconstruction formula that generates a contact cosmological correlator in de Sitter spacetime from a contact scalar or graviton amplitude. We also show how the same procedure can be used to derive higher-point contact cosmological correlators. Our results further extend the reach of the boostless cosmological bootstrap and build a new connection between flat and curved spacetime physics. 31 pages |
| Databáze: | OpenAIRE |
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