University of Cambridge > Talks.cam > Cosmology Lunch > Fermion Creation by Cosmic Perturbations at 1-loop

Fermion Creation by Cosmic Perturbations at 1-loop

Add to your list(s) Download to your calendar using vCal

If you have a question about this talk, please contact Thomas Colas.

Weyl spin 1/2 fermions, when minimally coupled to Einstein’s gravity, cannot be produced purely gravitationally in an expanding universe at tree level. However, this picture changes at the gravitational 1-loop level in the presence of cosmic perturbations, leading to a new and unavoidable mechanism for gravitational particle production. In this talk, I will explore the theory and phenomenological implications of this new effect.

This talk is part of the Cosmology Lunch series.

Tell a friend about this talk:

This talk is included in these lists:

Note that ex-directory lists are not shown.

 

© 2006-2025 Talks.cam, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity