Nonperturbative renormalization group for the Kardar-Parisi-Zhang equation.
We present a simple approximation of the nonperturbative renormalization group designed for the Kardar-Parisi-Zhang equation and show that it yields the correct phase diagram, including the strong-coupling phase with reasonable scaling exponent values in physical dimensions. We find indications of a possible qualitative change of behavior around d=4. We discuss how our approach can be systematically improved.
Canet
Léonie
L
LPMMC, CNRS UMR 5493, Université Joseph Fourier, 38042 Grenoble, France.
Chaté
Hugues
H
Delamotte
Bertrand
B
Wschebor
Nicolás
N