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oai:recercat.cat:2445/95292025-12-05T16:41:42Zcom_2072_1057col_2072_478823col_2072_478917

Theory for correlation functions of processes driven by external colored noise Hernández Machado, Aurora Casademunt i Viader, Jaume Rodríguez Díaz, Miguel Ángel Pesquera, L. Noriega, J. M. Fluctuacions (Física) Processos estocàstics Fluctuations (Physics) Stochastic processes We study steady-state correlation functions of nonlinear stochastic processes driven by external colored noise. We present a methodology that provides explicit expressions of correlation functions approximating simultaneously short- and long-time regimes. The non-Markov nature is reduced to an effective Markovian formulation, and the nonlinearities are treated systematically by means of double expansions in high and low frequencies. We also derive some exact expressions for the coefficients of these expansions for arbitrary noise by means of a generalization of projection-operator techniques. 2009-10-06T08:40:02Z 2009-10-06T08:40:02Z 1991 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 1050-2947 https://hdl.handle.net/2445/9529 62562 eng Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevA.43.1744 Physical Review A, 1991, vol. 43, núm. 4, p. 1744-1753. http://dx.doi.org/10.1103/PhysRevA.43.1744 (c) The American Physical Society, 1991 info:eu-repo/semantics/openAccess 10 p. application/pdf The American Physical Society Articles publicats en revistes (Física Quàntica i Astrofísica)