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Vacuum decay along supersymmetric flat directions
A. Riotto, E. Roulet
It has been recently realized that within the Minimal Supersymmetric Standard Model, for certain patterns of superpartner masses, consistent with all the present experimental const…
Towards a Nonequilibrium Quantum Field Theory Approach to Electroweak Baryogenesis
Antonio Riotto
We propose a general method to compute -violating observables from extensions of the standard model in the context of electroweak baryogenesis. It is alternative to the one rec…
On the Nonequilibrium Effective Potential
A. Riotto, I. Vilja
Nonequilibrium phenomena of the phase transitions are studied. It is shown that due to finite relaxation time of the particle distributions, the use of scalar background dependent…
A Stochastic Approach to Thermal Fluctuations during a First Order Electroweak Phase Transition
F. Illuminati, A. Riotto
We investigate the role played by subcritical bubbles at the onset of the electroweak phase transition. Treating the configuration modelling the thermal fluctuations around the hom…
Particle Currents in a Space-Time dependent and CP-violating Higgs Background: a Field Theory Approach
D. Comelli, M. Pietroni, A. Riotto
Motivated by cosmological applications like electroweak baryogenesis, we develop a field theoretic approach to the computation of particle currents on a space-time dependent and CP…
Do subcritical bubbles hinder first order phase transition?
K. Enqvist, A. Riotto, I. Vilja
We consider the role played by subcritical bubbles during the electroweak phase transition, estimate their average size, amplitude and formation rate taking into account the crucia…