Bootstrapping Inflationary Correlators


Lee, H. (2019). Bootstrapping Inflationary Correlators. Perimeter Institute. https://pirsa.org/19110148


Lee, Hayden. Bootstrapping Inflationary Correlators. Perimeter Institute, Nov. 26, 2019, https://pirsa.org/19110148


          @misc{ pirsa_19110148,
            doi = {10.48660/19110148},
            url = {https://pirsa.org/19110148},
            author = {Lee, Hayden},
            keywords = {Particle Physics},
            language = {en},
            title = {Bootstrapping Inflationary Correlators},
            publisher = {Perimeter Institute},
            year = {2019},
            month = {nov},
            note = {PIRSA:19110148 see, \url{https://pirsa.org}}

Hayden Lee Harvard University

Talk Type Scientific Series


The central idea of the bootstrap philosophy is to constrain observables directly from consistency conditions alone, bypassing the intricacies of the Lagrangian formalism. In this talk, I will adopt this viewpoint and describe a boundary-centric approach to determine cosmological correlators, following a perspective familiar from the modern studies of scattering amplitudes. Specifically, I will describe the symmetries and singularities of three- and four-point functions in de Sitter space and inflation, and explain how these principles can be used to fully determine the final answer without reference to bulk time evolution. I will also highlight spectroscopic features encoded in these correlators, relevant for the search of primordial non-Gaussianity in future cosmological observations.