Garrido, L. (Luis), 1930-Masoliver, Jaume, 1951-2012-04-262012-04-2619850022-2488https://hdl.handle.net/2445/24551Exact solutions to FokkerPlanck equations with nonlinear drift are considered. Applications of these exact solutions for concrete models are studied. We arrive at the conclusion that for certain drifts we obtain divergent moments (and infinite relaxation time) if the diffusion process can be extended without any obstacle to the whole space. But if we introduce a potential barrier that limits the diffusion process, moments converge with a finite relaxation time.6 p.application/pdfeng(c) American Institute of Physics, 1985Física matemàticaEquació de Fokker-PlanckDifusióMathematical physicsFokker-Planck equationDiffusioninfo:eu-repo/semantics/article155962012-04-24info:eu-repo/semantics/openAccess