6 papers · 1 filter
The deconfinement phase transition as an Aharonov-Bohm effect
Janos Polonyi
A subjective and incomplete list of interesting and unique features of the deconfinement phase transition is presented. Furthermore a formal similarity of the density matrix of the…
Tree-level renormalization
Jean Alexandre, Janos Polonyi
It is shown in the framework of the N-component scalar model that the saddle point structure may generate non-trivial renormalization group flow. The spinodal phase separation can…
Path Integral for the Dirac Equation
Janos Polonyi
A c-number path integral representation is constructed for the solution of the Dirac equation. The integration is over the real trajectories in the continuous three-space and other…
Renormalization Group with Condensate
Jean Alexandre, Vincenzo Branchina, Janos Polonyi
The renormalization group is applied to the phi4 model in the symmetry broken phase in order to identify different scaling regimes. The new scaling laws reflect nonuniversal behavi…
Mini-Instantons in SU(2) Gauge Theory
Vincenzo Branchina, Janos Polonyi
The effects of instantons close to the cut-off is studied in four dimensional SU(2) gauge theory with higher order derivative terms in the action. It is found in the framework of t…
Fixed points, saddle points and universality
Janos Polonyi
It is pointed out that the universality might seriously be violated by models with several fixed points.