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Résumé |
Cosmological bootstrap is an attempt to formulate cosmological boundary correlators (in de Sitter and beyond) based on the fundamental principles of locality, unitarity, and symmetries. In this talk, I review the recent advances in this field with a particular focus on the cutting rules for the boundary wavefunction coefficients, which are implied by the unitary time evolution in the bulk. I will apply the cutting rules and additional bootstrap inputs to compute the imprints of heavy particles on inflationary correlation functions in situations where de Sitter boosts are strongly broken. I will identify the smoking gun footprint of supersonic particles during inflation as resonances in the soft limit of the inflationary three- and four-point functions. |
