arXiv:0711.1866·v2·High Energy Physics — Phenomenology
Langevin Simulation of Scalar Fields: Additive and Multiplicative Noises and Lattice Renormalization
N. C. Cassol-Seewald🇧🇷 · R. L. S. Farias🇧🇷 · E. S. Fraga🇧🇷 · G. Krein🇧🇷 · Rudnei O. Ramos🇧🇷
Abstract
We consider the Langevin lattice dynamics for a spontaneously broken lambda phi^4 scalar field theory where both additive and multiplicative noise terms are incorporated. The lattice renormalization for the corresponding stochastic Ginzburg-Landau-Langevin and the subtleties related to the multiplicative noise are investigated.
Comments: 26 pages, 4 eps figures (Elsevier latex style)