2 papers
astro-ph.CO2026
Inflationary relics from an Ultra-Slow-Roll plateau
Albert EscrivÃ, Jaume Garriga, Shi Pi
We investigate the formation of primordial black holes (PBHs) in inflationary scenarios featuring an ultra-slow-roll (USR) plateau with a sharp transition to slow roll. We focus on…
astro-ph.CO2025
Unexpected shape of the primordial black hole mass function
Jacopo Fumagalli, Jaume Garriga, Cristiano Germani +1
In a Universe with nearly-Gaussian initial curvature perturbations, the abundance of primordial black holes can be derived from the curvature power spectrum. When the latter is enh…