Basic treatment of QCD phase transition bubble nucleation

Simulating the Electroweak Phase Transition: Sonification of Bubble Nucleation

As an applicaton of sonification, a simulation of the early universe was developed to portray a phase transition that occurred shortly after the Big Bang. The Standard Model of particle physics postulates that a hypothetical particle, the Higgs boson, is responsible for the breaking of the symmetry between the electromagnetic force and the weak force. This phase transition may have been respons...

Bubble-Nucleation Rates for Cosmological Phase Transitions

We estimate bubble-nucleation rates for cosmological phase transitions. We concentrate on the evaluation of the pre-exponential factor, for which we give approximate analytical expressions. Our approach relies on the use of a real coarse-grained potential. The consistency of the calculation implies that the coarse-graining scale must be larger than the typical scale of the critical bubble. We s...

Chiral Phase Transition in QCD

We employ non–perturbative flow equations to compute the equation of state for two flavor QCD within an effective quark meson model. This yields the temperature and quark mass dependence of quantities like the chiral condensate or the pion mass. Our treatment covers both the chiral perturbation theory domain of validity and the domain of validity of universality associated with critical phenome...

Two Flavour QCD Phase Transition

Results on the phase transition in QCD with two flavours of light staggered fermions from an ongoing simulation are presented. We find the restoration of the chiral SU(2)× SU(2) symmetry, but not of the axial UA(1) symmetry. 1 Deconfinement and Chiral Symmetry There are two symmetries in QCD, each giving rise to a phase transition. For infinite quark mass, ie., pure SU(3) gauge theory, there is...

Deconfinement Phase Transition in QCD