Scientific Calendar Event

Starts 31 Jan 2023 16:00
Ends 31 Jan 2023 17:30
Central European Time
Zoom Meeting + in presence
Leonardo Building - Luigi Stasi Seminar Room

Zoom meeting link:

Meeting ID: 923 5091 5933

Password: 013124
Abstract. Cosmological first-order phase transitions are said to be strongly supercooled when the nucleation temperature is much smaller than the critical temperature. They are typical of potentials which feature nearly scale-invariance, for which the bounce action decreases only logarithmically with time. The phase transition takes place slowly and the probability distribution of bubble nucleation time is maximally spread. Hubble patches which get percolated later than the average are hotter than the background after reheating and potentially collapse into black holes. We discuss the formation of primordial black holes by supercooled first-order phase transitions and we present a class of particle physics models predicting such transitions.