PIRSA:21100014

Cosmological Particle Production and Pairwise Hotspots on the CMB

Tsai, Y. (2021). Cosmological Particle Production and Pairwise Hotspots on the CMB. Perimeter Institute. https://pirsa.org/21100014

Tsai, Yuhsin. Cosmological Particle Production and Pairwise Hotspots on the CMB. Perimeter Institute, Oct. 05, 2021, https://pirsa.org/21100014 

          @misc{ pirsa_PIRSA:21100014,
            doi = {10.48660/21100014},
            url = {https://pirsa.org/21100014},
            author = {Tsai, Yuhsin},
            keywords = {Particle Physics},
            language = {en},
            title = {Cosmological Particle Production and Pairwise Hotspots on the CMB},
            publisher = {Perimeter Institute},
            year = {2021},
            month = {oct},
            note = {PIRSA:21100014 see, \url{https://pirsa.org}}
          }

Yuhsin Tsai University of California, Davis

DOI 10.48660/21100014
Collection
Talk Type Scientific Series
Subject

Abstract

Cosmic inflation provides an environment similar to particle colliders that can produce new particles and record the resulting signal. In this talk, I will describe a scenario in which new particles much heavier than the Hubble scale are produced during inflation via couplings to the inflaton. These heavy particles propagate classically and give rise to localized spots on the cosmic microwave background following their production. Momentum conservation during particle production dictates that these localized spots come in pairs. I will discuss the properties of such pairs of CMB spots and the prospect of their detection from the thermal fluctuation background in a position space search.