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24.02.2025 / 15:00 - 16:00 / Hamburg, SR2, building 2a
Theory SeminarCosmological Imprints of Evaporating Primordial Black Holes
Lucien Heurtier (University of Arizona)
Light primordial black holes - formed shortly after the end of cosmic inflation - contain crucial information regarding the evolution of the early Universe and its particle physics content. Depending on their masses and spins, primordial black holes can evaporate via Hawking radiation at different times throughout cosmic history, leaving all sorts of imprints that may become measurable soon in cosmological or experimental data. After reviewing general aspects of primordial black hole evaporation in cosmology, I will present recent developments in the field regarding the effect of evaporating PBHs on their environment, as they constantly heat their surroundings locally. I will demonstrate that the existence of such temperature gradients in the plasma around PBHs leads to sizeable modifications of existing bounds on PBHs, highlighting the importance of understanding out-of-equlibrium particle physics around evaporating black holes in the future.
More Information: https://indico.desy.de/event/47115/
