12 papers · 1 filter
Phase transitions in the early and the present Universe: from the big bang to heavy ion collisions
D. Boyanovsky
In these lectures I discuss cosmological phase transitions with the goal of establishing the possibility of observational consequences. I argue that the {\em only} phase transition…
Direct photons: a nonequilibrium signal of the expanding quark-gluon plasma
Shang-Yung Wang, Daniel Boyanovsky, Kin-Wang Ng
Direct photon production from a longitudinally expanding quark-gluon plasma (QGP) at Relativistic Heavy Ion Collider (RHIC) and Large Hadron Collider (LHC) energies is studied with…
Real-time nonequilibrium dynamics in hot QED plasmas: dynamical renormalization group approach
S. -Y. Wang, D. Boyanovsky, H. J. de Vega +1
We study the real-time nonequilibrium dynamics in hot QED plasmas implementing a dynamical renormalization group and using the hard thermal loop (HTL) approximation. The focus is o…
Dynamics of Symmetry Breaking Out of Equilibrium: From Condensed Matter to QCD and the Early Universe
D. Boyanovsky, H. J. de Vega
The dynamics of symmetry breaking during out of equilibrium phase transitions is a topic of great importance in many disciplines, from condensed matter to particle physics and earl…
Dynamical Renormalization Group Approach to Quantum Kinetics in Scalar and Gauge Theories
D. Boyanovsky, H. J. de Vega, S. -Y. Wang
We derive quantum kinetic equations from a quantum field theory implementing a diagrammatic perturbative expansion improved by a resummation via the dynamical renormalization group…
Damping Rates and Mean Free Paths of Soft Fermion Collective Excitations in a Hot Fermion-Gauge-Scalar Theory
S. -Y. Wang, D. Boyanovsky, H. J. de Vega +2
We study the transport coefficients, damping rates and mean free paths of soft fermion collective excitations in a hot fermion-gauge-scalar plasma with the goal of understanding th…