5 papers
Flow Equations for Phase Transitions in Statistical Physics and QCD
D. -U. Jungnickel, C. Wetterich
We review the formalism of the effective average action in quantum field theory which corresponds to a coarse grained free energy in statistical mechanics. The associated exact ren…
The chiral phase transition from the exact RG
D. -U. Jungnickel
A brief introduction is given to the concept of the effective average action. Its dependence on the averaging or coarse graining scale is governed by an exact RG equation for which…
Nonperturbative Flow Equations, Low-Energy QCD and the Chiral Phase Transition
D. _U. Jungnickel, C. Wetterich
We review the formalism of the effective average action in quantum field theory which corresponds to a coarse grained free energy in statistical mechanics. The associated exact ren…
Nonperturbative Flow Equations and Low--Energy QCD
D. -U. Jungnickel, C. Wetterich
We review the formalism of the effective average action in quantum field theory which corresponds to a coarse grained free energy in statistical mechanics. The associated exact ren…
Quarks, mesons and (exact) flow equations
D. -U. Jungnickel
Dynamical chiral symmetry breaking is described within the linear sigma model of QCD coupled to quarks. The main technical tool used for this intrinsically non--perturbative proble…