Particle seminar

Date: 
Monday, November 11, 2019

Speaker: Tommi Tenkanen

Affiliation: Johns Hopkins

Time: 2:30PM -- 3:30PM

Location: HP 4351

Title: Inflationary imprints on dark matter

Abstract: I will discuss the preferred initial conditions that scalar field 
fluctuations during cosmic inflation generically place for post-inflationary, 
non-thermal dark matter (DM) production. I will show that accumulation 
of quantum fluctuations during inflation can account for all or part of DM. 
I will also discuss the DM isocurvature perturbations that are unavoidably 
generated in such scenarios and the circumstances under which they are 
not problematic for viability of non-thermal DM models. I will also discuss 
implications of DM isocurvature for structure formation, showing that 
interesting consequences can be expected.