[W77] Tommi Tenkanen: Spectator Dark Matter

Wednesday 10 April 2019 15.00 GMT

Questions via youtube chat

Speaker
Tommi Tenkanen
Johns Hopkins University
USA

Host
Nicolás Bernal

Abstract
I show that the observed dark matter abundance in the Universe can be fully accounted for by a minimally coupled spectator scalar field that was light during cosmic inflation and has sufficiently strong self-coupling. In this scenario, dark matter was produced during inflation by amplification of quantum fluctuations of the spectator field. The self-interaction of the field suppresses its fluctuations on large scales, and therefore avoids cosmological isocurvature constraints. The scenario allows for a broad dark matter mass range from 1 GeV to 10^8 GeV. I will also discuss prospects for detection.

Reference
Spectator Dark Matter

Super fancy slides
https://prezi.com/view/m84F8dNHO2qeRTvesUL2/

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