We review the use of an exact renormalization group equation in quantum field theory and
statistical physics. It describes the dependence of the free energy on an infrared cutoff for the …

Based on the field-theoretical renormalization-group theory for O (N) symmetric systems in 4-
ɛ dimensions, the free energy of critical films confined between two parallel plates at …

A systematic method for the computation of finite-temperature (T) crossover functions near
quantum-critical points close to, or above, their upper-critical dimension is devised. We …

We study, with various methods, the high-temperature phase transition for the N-
componentφ 4 theory in the large-N limit. Our results fully confirm a previous investigation of …

We study the nonequilibrium dynamics leading to the formation of topological defects in a
symmetry-breaking phase transition of a quantum scalar field with λ Φ 4 self-interaction in a …

Abstract Series for the Wilson functions of an ''environmentally friendly''renormalization
group are computed to two loops, for an O (N) vector model, in terms of the ''floating …

We analyze the renormalization of systems whose effective degrees of freedom are
described in terms of fluctuations which are “environment”-dependent. Relevant …

The present status of the field-theoretic renormalization-group (RG) approach to finite-size
effects in 4 He near the superfluid transition is reviewed. The perturbation theory is …

Using a 5D N= 1 supersymmetric toy-model compactified on S 1/(Z 2× Z 2'), with a``brane-
localised''superpotential, it is shown that higher (dimension) derivative operators are …

An approximate quantitative discussion of nonperturbative effects for the high temperature
electroweak phase transition is presented. We propose a method for the computation of the …