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The Cosmological Bootstrap
April 22, 20192:00 pm – 3:00 pm (CDT)

The Cosmological Bootstrap


Hayden Lee (Harvard University)



Mitchell Institute for Fundamental Physics & Astronomy

College Station, Texas 77843

Event Details

The central idea of the “bootstrap” approach is to constrain observables directly from consistency conditions, without a Lagrangian description. In this talk, I will adopt this viewpoint and discuss how the structure of cosmological correlation functions is controlled by (approximate) conformal symmetry and singularities, focusing on 3- and 4-point functions at tree level. In particular, I will describe a class of differential operators that shift external masses and internal spins, allowing a general inflationary correlator to be written in terms of a few seed functions. I will also highlight spectroscopic signatures encoded in these correlators, which can be searched for in future cosmological observations.

Video Recording

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