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Please use this identifier to cite or link to this item: http://repositorio.ufba.br/ri/handle/ri/14666

Title: Gauge symmetry in Fokker–Planck dynamics
Other Titles: Physica A: Statistical Mechanics and its Applications
Authors: Santana, Ademir Eugênio de
Montigny, M. de
Khanna, Faqir C.
Keywords: Fokker-Planck equation;Symmetry in field theory;Riemannian geometry
Issue Date: 2003
Abstract: Using a Galilean metric approach, based on an embedding of the Euclidean space into a (4+1)-Minkowski space, we analyze a gauge invariant Lagrangian associated with a Riemannian manifold View the MathML source, with metric g. With a specific choice of the gauge condition, the Euler–Lagrange equations are written covariantly in View the MathML source, and then the Fokker–Planck equation is derived, such that the drift and the diffusion terms are obtained from g. The analysis is carried out for both, Abelian and non-Abelian symmetries, and an example with the su(2) symmetry is presented.
Description: Texto completo: acesso restrito. p. 327–335
URI: http://repositorio.ufba.br/ri/handle/ri/14666
ISSN: 0378-4371
Appears in Collections:Artigos Publicados em Periódicos (FIS)

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