Speaker
Mr
Andrea Guiggiani
(INFN,Universit`a di Firenze)
Description
Bubble nucleation is a key aspect of a cosmological first-order phase transition. The non-equilibrium bubble dynamics and the properties of the transition are controlled by the density perturbations in the hot plasma. We present a new spectral method devised for a fast and reliable computation of the collision integral in the Boltzmann equations. In a scalar singlet extension of the Standard Model chosen as a benchmark scenario, we test our algorithm, determining the bubble speed and profile, and we assess the impact of the out-of-equilibrium dynamics.
Primary author
Mr
Andrea Guiggiani
(INFN,Universit`a di Firenze)
