Speaker
Hayden Lee
(University of Cambridge)
Description
Cosmological correlation functions encode the spectrum of particles during inflation, in analogy to scattering amplitudes in colliders. In this talk, I will discuss the imprints of massive particles with arbitrary spin on cosmological correlators. The spinning case is particularly interesting because the detection of massive higher-spin particles would be strongly indicative of a stringy origin of inflation. I will describe their key spectroscopic features in the scalar and tensor bispectra, and discuss scenarios in which they lead to observable non-Gaussianity.
| Presentation type | Parallel talk |
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Primary author
Hayden Lee
(University of Cambridge)
Co-authors
Prof.
Daniel Baumann
Dr
Guilherme Pimentel
