Speaker
Tommi Tenkanen
(Johns Hopkins University)
Description
The observed dark matter abundance in the Universe can be fully accounted for by a scalar field that was light during cosmic inflation and has sufficiently strong self-coupling. In this scenario, dark matter was produced in a somewhat non-standard way: by amplification of quantum fluctuations of the scalar field during inflation. The self-interaction of the field suppresses its fluctuations on large scales, and therefore avoids cosmological isocurvature constraints. The scenario does not require any fine-tuning of parameters. I will also discuss ways to test the scenario.
Authors
Tommi Tenkanen
(Johns Hopkins University)
Dr
Tommi Markkanen
(Imperial College London)
Prof.
Arttu Rajantie
(Imperial College London)
