par Brenig, Léon ;Van Den Broeck, Christian
Référence Physical review. A, Atomic, Molecular, and Optical Physics, 21, 3, page (1039-1048)
Publication Publié, 1980
Article révisé par les pairs
Résumé : A nonlinear diffusion approximation for a previously derived master equation describing an inhomogeneous Boltzmann gas in a lumped phase space is proposed. A fluctuating kinetic equation is obtained which differs from the usual Langevin equations in three essential properties: the drift and random force are nonlinear, the random noise obeys a generalized fluctuation-dissipation theorem, and there is no reference to equilibrium. Relations with other approaches to hydrodynamic fluctuations are discussed. © 1980 The American Physical Society.