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T: Fachverband Teilchenphysik

T 21: Invited Topical Talks II

T 21.4: Invited Topical Talk

Dienstag, 1. April 2025, 15:15–15:45, ZHG010

Feebly Interacting Particles in the Early Universe — •Mathias Becker — University of Padova

Feebly interacting particles (FIPs) have gained attention as a compelling alternative to WIMP dark matter. In this talk, I will present recent advancements in the precise determination of FIP production rates from a thermal plasma, emphasizing the role of finite-temperature effects. I will also discuss how experimental searches, including long-lived particle and direct detection experiments, can probe FIPs and potentially reveal insights into early universe phenomena such as inflationary reheating.

Keywords: Feebly Interacting Particles; Dark Matter; Thermal Field Theory; Phenomenology