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Transition from anomalous to normal hysteresis in a system of coupled Brownian motors: a mean field approach

S. E. Mangioni·R. R. Deza·H. S. Wio
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Abstract

We address a recently introduced model describing a system of periodically coupled nonlinear phase oscillators submitted to multiplicative white noises, wherein a ratchet-like transport mechanism arises through a symmetry-breaking noise-induced nonequilibrium phase transition. Numerical simulations of this system reveal amazing novel features such as negative zero-bias conductance and anomalous hysteresis, explained resorting to a strong-coupling analysis in the thermodynamic limit. Using an explicit mean-field approximation we explore the whole ordered phase finding a transition from anomalous to normal hysteresis inside this phase, estimating its locus and identifying (within this scheme) a mechanism whereby it takes place.

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S. E. Mangioni, R. R. Deza, H. S. Wio. 2000-12-21. Transition from anomalous to normal hysteresis in a system of coupled Brownian motors: a mean field approach. https://doi.org/10.1103/physreve.63.041115

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