Baryogenesis from ultra-slow-roll inflation

A bstract The ultra-slow-roll (USR) inflation represents a class of single-field models with sharp deceleration the rolling dynamics on small scales, leading to significantly enhanced power spectrum curvature perturbations and primordial black hole (PBH) formation. Such transition inflationary background can trigger coherent motion scalar condensates effective potentials governed by rate inflaton field. We show that condensate carrying (a combination of) baryon or lepton number achieve successful baryogenesis through Affleck-Dine mechanism from unconventional initial conditions excited USR transition. Viable parameter space for creating correct asymmetry Universe naturally incorporates specific limit PBHs contribute dark matter, shedding light cosmic coincidence problem between matter densities today.