Cosmological gravitational particle production: Starobinsky vs Bogolyubov, uncertainties, and issues

16 Jul 2025, 16:00
25m

Speaker

Duarte Da Silva Feiteira

Description

Gravitational particle production provides an ever-present background in non-thermal dark matter studies. I discuss the correspondence between the Starobinsky and Bogolyubov approaches to the problem of inflationary particle production, and derive strong constraints on frameworks with scalar dark relics.

(Based on D. Feiteira, O. Lebedev, arXiv:2503.14652)

Authors

Duarte Da Silva Feiteira Prof. Oleg Lebedev (University of Helsinki)

Presentation materials