Theory Seminar (High Energy/Cosmology)

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Events During the Week of February 21st through February 28th, 2021

Monday, February 22nd, 2021

No events scheduled

Tuesday, February 23rd, 2021

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Wednesday, February 24th, 2021

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Thursday, February 25th, 2021

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Friday, February 26th, 2021

Decoding and bootstrapping cosmological fluctuations
Time: 2:00 pm - 3:00 pm
Place: For zoom link, sign up at:
Speaker: Guilherme Pimentel, Leiden University & University of Amsterdam
Abstract: 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.
Host: Lars Aalsma
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