Particle Production during and after Inflation

by Prof. Wei Xue (University of Florid)

Friday 16 Jun 2023, 13:00 → 15:00 Asia/Shanghai

Tsung-Dao Lee Institute/N6F-N630 - Smart Classroom (Tsung-Dao Lee Institute)

Abstract:

This talk will discuss particle production during inflation and in the reheating period.

First, Considering a Chern-Simons coupling between gauge bosons and a pseudoscalar inflaton, one of the transverse gauge modes is efficiently produced. Its inverse decay leaves an imprint in the primordial scalar and tensor perturbations. These perturbations give rich predictions in cosmology, including cosmological collider, gravitational waves, and parity-odd trispectrum. 

Then, in the other part of my talk, I will discuss an alternative method to understand reheating of the universe, which is the necessary step from inflaton to the hot big bang.

Biography:

Xue joined the Department of Physics at the University of Florida in September 2019. He was a postdoctoral fellow at INFN/SISSA, Center for Theoretical Physics of MIT, and the CERN Theoretical Physics Department. He received his Ph.D. in Physics from McGill University in 2012. His research interests include particle physics, cosmology, and astroparticle physics. In particular, it focuses on understanding the nature of dark matter.

Online Meeting Room：
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