2 papers
hep-ph2026
From inflation to hot big bang -- a tutorial on cosmological perturbations
Mikko Laine, Simona Procacci
These lecture notes are meant as a pedagogic guide to cosmological inflation and the early epochs thereafter. Inflation explains how the seeds for density perturbations, which evol…
gr-qc2026
Fluid perturbations from expanding bubbles in first-order phase transitions
Chiara Caprini, Antonino S. Midiri, Simona Procacci +1
We study the power spectrum of the velocity field induced during a first-order phase transition occurring in the radiation-dominated era. We focus on the phase of bubble expansion,…