Primordial Black Hole Formation during a Strongly Coupled Crossover by Albert Escrivà et al. on Wednesday 30 November

The final mass distribution of primordial black holes is sensitive to the

equation of state of the Universe at the scales accessible by the power

spectrum. Motivated by the presence of phase transitions in several beyond the

Standard Model theories, some of which are strongly coupled, we analyse the

production of primordial black holes during such phase transitions, which we

model using the gauge/gravity duality. We focus in the (often regarded as

physically uninteresting) case for which the phase transition is just a smooth

crossover. We find an enhancement of primordial black hole production in the

range $M_{\rm{PBH}}\in[10^{-16},10^{-6}]M_{\odot}$.

arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2211.15674v1