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hep-ph2025
Trapped and Unstable: Axion-like particle fragmentation at finite temperature
Nicklas Ramberg, Daniel Schmitt
We investigate the emergence of a resonant behavior in axion-trapped misalignment models featuring finite-temperature potential barriers. As the temperature decreases and the field…
hep-ph2025★ 7 cited
Thermodynamical uncertainties for primordial black holes from cosmological phase transitions
Maciej Kierkla, Nicklas Ramberg, Philipp Schicho +1
Strongly supercooled first-order phase transitions have been proposed as a primordial black hole (PBH) production mechanism. While previous works rely on simplified models with lim…