64 citations · 163 across the 11 of their papers we have counts for
9 papers · 1 filter
Globally Charged Vacuum Decay
Giulio Barni, Jose R. Espinosa
Vacuum decay at zero temperature is generically described by a real -symmetric Coleman bounce. When the scalar field driving the decay carries a conserved global charge, this…
Electroweak Baryogenesis with BARYONET: a self-contained review of the WKB approach
Giulio Barni
We present a comprehensive, self-contained pedagogical computation of the baryon asymmetry of the Universe within electroweak baryogenesis (EWBG), from the derivation of the semicl…
Gravitational waves from the sound shell model: direct and inverse phase transitions in the early Universe
Giulio Barni, Simone Blasi, Eric Madge +1
Cosmological phase transitions are a frequent phenomenon in particle physics models beyond the Standard Model, and the corresponding gravitational wave signal offers a key probe of…
Super-heated first order phase transitions
Giulio Barni, Andrea Tesi
We study first order phase transitions that occur when the temperature of the system increases and we identify the conditions that lead to super-heating, a phase where the system c…
Inverse bubbles from broken supersymmetry
Giulio Barni, Simone Blasi, Miguel Vanvlasselaer
Building upon the recent findings regarding inverse phase transitions in the early universe, we present the first natural realisation of this phenomenon within a supersymmetry-brea…
The hydrodynamics of inverse phase transitions
Giulio Barni, Simone Blasi, Miguel Vanvlasselaer
First order phase transitions are violent phenomena that occur when the state of the universe evolves abruptly from one vacuum to another. A \emph{direct} phase transition connects…
NLO friction in symmetry restoring phase transitions
Aleksandr Azatov, Giulio Barni, Rudin Petrossian-Byrne
Interactions between bubbles/domain walls and the surrounding medium are a topic of active research, particularly as they apply to friction effects on accelerated expansion during…
Quantisation Across Bubble Walls and Friction
Aleksandr Azatov, Giulio Barni, Rudin Petrossian-Byrne +1
We quantise from first principles field theories living on the background of a bubble wall in the planar limit with particular focus on the case of spontaneous breaking of gauge sy…
Ultra-relativistic bubbles from the simplest Higgs portal and their cosmological consequences
Aleksandr Azatov, Giulio Barni, Sabyasachi Chakraborty +2
We analyze the phase transitions in the minimal extension of the SM with a real singlet scalar field. The novelty of our study is that we identify and analyze in details the region…