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Monday, August 03, 2020
10:00 AM - 11:00 AM
Online Event

# High Energy Physics Seminar

Decoding and bootstrapping cosmological fluctuations
Guilherme Pimentel, University of Amsterdam,

https://caltech.zoom.us/j/99867284027 meeting ID: 998 672 84027

I will review our current understanding of the initial conditions of the universe, and describe what information is available from current and future measurements of cosmological correlation functions. Then I will describe a new method to compute and constrain the possible shapes of those correlation functions, assuming they were generated during inflation. This cosmological bootstrap" draws inspiration from the modern scattering amplitudes program in flat space, as well as the conformal bootstrap of phase transitions. After discussing primordial scalar fluctuations, I will also explain how the consistent propagation of gravitational waves imposes further constraints on the structure of spinning primordial correlators.