Langevin simulation of scalar fields: Additive and multiplicative noises and lattice renormalization期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Langevin simulation of scalar fields: Additive and multiplicative noises and lattice renormalization

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

Affiliation:	1. Instituto de Física Teórica, Universidade Estadual Paulista, Rua Dr. Bento Teobaldo Ferraz, 271 - Bloco II, 01140-070 São Paulo, SP, Brazil;2. Departamento de Ciências Naturais, Universidade Federal de São João Del Rei, 36301-000 São João Del Rei, MG, Brazil;3. Instituto de Física, Universidade Federal do Rio de Janeiro, 21941-972 Rio de Janeiro, RJ, Brazil;4. Departamento de Física Teórica, Universidade do Estado do Rio de Janeiro, 20550-013 Rio de Janeiro, RJ, Brazil

Abstract:	We consider the Langevin lattice dynamics for a spontaneously broken λ?⁴ $λ ?^{4}$ 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.

Keywords:	Langevin dynamics Lattice renormalization Multiplicative noise
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