0711.1866 (N. C. Cassol-Seewald et al.)

Langevin Simulation of Scalar Fields: Additive and Multiplicative Noises
and Lattice Renormalization    [PDF]

N. C. Cassol-Seewald, R. L. S. Farias, E. S. Fraga, G. Krein, Rudnei O. Ramos

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.

View original: http://arxiv.org/abs/0711.1866