Particle Physics and Cosmology Phase transitions

baryogenesis during electroweak phase transition ?

Sakharov’s conditions for baryogenesis during electroweak phase transition baryon number violation interactions ☺ charge conjugation violating interactions ☺ CP – violating interactions ☺ non – equilibrium process ☺

baryogenesis during electroweak phase transition ? strongly first order electroweak phase transition can generate baryon asymmetry if CP violation is sufficiently strong no efficient baryogenesis for weak first order phase transition, second order phase transition or crossover presumably too little CP violation in SM ( not definitely settled )

electroweak phase transition

order of phase transition

temperature dependent effective potential high temperature expansion

next to leading order in high temperature expansion

first order cosmological phase transitions

chaos in the Universe

relics from cosmological first order phase transitions ?

electroweak crossover

critical mass of the Higgs scalar for the onset of crossover

electroweak “phase transition “ in standard model is crossover ! perhaps strong first order transition in supersymmetric extensions of standard model

standard model of particle physics and cosmology no candidate for dark matter no baryon asymmetry no massive neutrinos

standard model of particle physics and cosmology prediction : present Universe consists of photons and massless neutrinos