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    Université de Fribourg

    Effective equilibrium states in the colored-noise model for active matter I. Pairwise forces in the Fox and unified colored noise approximations

    Wittmann, René ; Maggi, C ; Sharma, Abhinav ; Scacchi, A ; Brader, Joseph M. ; Marconi, U Marini Bettolo

    In: Journal of Statistical Mechanics: Theory and Experiment, 2017, vol. 2017, no. 11, p. 113207

    The equations of motion of active systems can be modeled in terms of Ornstein– Uhlenbeck processes (OUPs) with appropriate correlators. For further theoretical studies, these should be approximated to yield a Markovian picture for the dynamics and a simplified steady-state condition. We perform a comparative study of the unified colored noise approximation (UCNA) and the approximation scheme...