Dark Matter and Inflation in Einstein-Cartan Gravity

by Inar Timiryasov (EPFL)

Wednesday 9 Dec 2020, 16:30 → 18:30 Europe/Zurich

CERN

It is known that the gravitational force can be obtained by gauging the Lorentz group. Once the resulting theory – Einstein-Cartan gravity – is coupled to matter, its action contains more terms of mass dimension at most 4 than metric gravity. In this talk, I will discuss them and explore two phenomenological consequences. First, Einstein-Cartan theory generalizes inflationary scenarios driven by the Higgs field. As in the known metric and Palatini models, the resulting predictions agree with observations. Secondly, we obtain a new mechanism for producing singlet fermions in the Early Universe. In a large range of masses, these fermions can constitute all of the dark matter.

Zoom link:  https://cern.zoom.us/j/98399499159

Meeting ID: 983 994 99159

Passcode: 323288