Coupled Brownian motors

Julián I. Peña Rosselló (), Roberto R. Deza and Horacio S. Wio
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Julián I. Peña Rosselló: IFIMAR (UNMdP&CONICET), Univ. Nac. de Mar del Plata
Roberto R. Deza: IFIMAR (UNMdP&CONICET), Univ. Nac. de Mar del Plata
Horacio S. Wio: IFISC (UIB&CSIC), Univ. de les Illes Balears

The European Physical Journal B: Condensed Matter and Complex Systems, 2018, vol. 91, issue 6, 1-5

Abstract: Abstract A set of coupled Brownian motors—resulting from a noise-induced phase transition generated through an entropic mechanism, and formerly studied in mean-field approximation—is numerically integrated by Heun’s method. The results add much insight to the mean-field ones, allowing interpretation of the underlying mechanisms. It turns out that the low-noise boundary of the ordered phase obtained in mean-field approximation lies near a region where the order parameter is negative. Hints of bistability and negative mobility around F = 0 are seen in two cases, and anomalous hysteresis is confirmed in one case.

Date: 2018
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DOI: 10.1140/epjb/e2018-80624-9

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