Speaker
Valentin Thoss
(Ludwig-Maximilians-Universität München)
Description
The energy injection through Hawking evaporation has been used to put strong constraints on primordial black holes as a dark
matter candidate at masses below 1e18 g. However, recent work has shown that Hawking’s semiclassical approximation breaks
down at latest after half-decay. Beyond this point, the evaporation could be significantly suppressed. In this work, we review
existing cosmological and astrophysical bounds on primordial black holes. We show that the constraints disappear completely
for a reasonable range of parameters, which opens a new window for light primordial black holes as a dark matter candidate.
Primary author
Valentin Thoss
(Ludwig-Maximilians-Universität München)
