Multiplicative Noise: Applications in Cosmology and Field Theory

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ar X iv : g r - qc / 9 30 80 22 v 1 2 1 A ug 1 99 3 Multiplicative Noise : Applications in Cosmology and Field Theory

Physical situations involving multiplicative noise arise generically in cosmology and field theory. In this paper, the focus is first on exact nonlinear Langevin equations, appropriate in a cosmological setting, for a system with one degree of freedom. The Langevin equations are derived using an appropriate time-dependent generalization of a model due to Zwanzig. These models are then extended ...

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ژورنال

عنوان ژورنال: Annals of the New York Academy of Sciences

سال: 1993

ISSN: 0077-8923,1749-6632

DOI: 10.1111/j.1749-6632.1993.tb24685.x