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.
Spectator Dark Matter
Super fancy slides