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American Physical Society, Physical review E: Statistical, nonlinear, and soft matter physics, 4(88), 2013

DOI: 10.1103/physreve.88.040102

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Intrinsic noise and discrete-time processes

Journal article published in 2013 by Joseph D. Challenger ORCID, Duccio Fanelli, Alan J. McKane
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This paper is available in a repository.

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Abstract

A general formalism is developed to construct a Markov chain model that converges to a one-dimensional map in the infinite population limit. Stochastic fluctuations are therefore internal to the system and not externally specified. For finite populations an approximate Gaussian scheme is devised to describe the stochastic fluctuations in the nonchaotic regime. More generally, the stochastic dynamics can be captured using a stochastic difference equation, derived through an approximation to the Markov chain. The scheme is demonstrated using the logistic map as a case study.