Centro de Excelencia Severo Ochoa

Main menu

Lessons for dark matter from nonstandard cosmologies

Seminar

Specialist level

Speaker:

Leszek Roszkowski

Institution:

Astrocent, NCAC PAS and NCBJ, Warsaw, Poland

Location&Place:

IFT Seminar Room/Red Room

Abstract:

Most studies of the particle physics of the early Universe assume a simple standard thermal scenario of radiation domination between the end of cosmic inflation and the start of Big Bang Nucleosynthesis. However, many well-motivated deviations from the standard scenario exist. In such nonstandard cosmologies many processes, including dark matter production, can be significantly affected. I will present a simple model of early matter domination and discuss how the properties of a dark matter axion produced through the misalignment mechanism and a dark matter WIMP produced through freeze-in change relative to the standard thermal model. Ensuing implications for discovery prospects of both dark matter candidates will also be presented.