title: Strong-coupling phases of the anisotropic Kardar-Parisi-Zhang equation.
abstract: We study the anisotropic Kardar-Parisi-Zhang equation using nonperturbative renormalization group methods. In contrast to a previous analysis in the weak-coupling regime, we find the strong-coupling fixed point corresponding to the isotropic rough phase to be always locally stable and unaffected by the anisotropy even at noninteger dimensions. Apart from the well-known weak-coupling and the now well-established isotropic strong-coupling behavior, we find an anisotropic strong-coupling fixed point for nonlinear couplings of opposite signs at noninteger dimensions.
authors.affiliation: IIP, Universidade Federal do Rio Grande do Norte, Av. Odilon Gomes de Lima 1722, 59078-400 Natal, Brazil.
authors.forename: Thomas
authors.initials: T
authors.lastname: Kloss
authors.affiliation: Laboratoire de Physique et Modélisation des Milieux Condensés, Université Joseph Fourier and CNRS, 25, avenue des Martyrs, BP 166, F-38042 Grenoble, France.
authors.forename: Léonie
authors.initials: L
authors.lastname: Canet
authors.affiliation: Instituto de Física, Facultad de Ingeniería, Universidad de la República, J.H.y Reissig 565, 11000 Montevideo, Uruguay.
authors.forename: Nicolás
authors.initials: N
authors.lastname: Wschebor