7–11 Jul 2025
America/Toronto timezone

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

7 Jul 2025, 16:00
20m

Speaker

Duarte Miguel da Silva Feiteira (University of Helsinki)

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 Miguel da Silva Feiteira (University of Helsinki) Prof. Oleg Lebedev (University of Helsinki)

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