Repository: Freie Universit├Ąt Berlin, Math Department

Negative friction memory induces persistent motion

Mitterwallner, Bernhard G. and Lavacchi, Laura and Netz, Roland R. (2020) Negative friction memory induces persistent motion. Eur Phys J E Soft Matter, 43 (10).

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Official URL: http://DOI:10.1140/epje/i2020-11992-5

Abstract

We investigate the mean-square displacement (MSD) for random motion governed by the generalized Langevin equation for memory functions that contain two different time scales: In the first model, the memory kernel consists of a delta peak and a single-exponential and in the second model of the sum of two exponentials. In particular, we investigate the scenario where the long-time exponential kernel contribution is negative. The competition between positive and negative friction memory contributions produces an enhanced transient persistent regime in the MSD, which is relevant for biological motility and active matter systems.

Item Type:Article
Subjects:Mathematical and Computer Sciences > Mathematics > Applied Mathematics
Divisions:Department of Mathematics and Computer Science > Institute of Mathematics
ID Code:2784
Deposited By: Monika Drueck
Deposited On:23 Feb 2022 15:04
Last Modified:23 Feb 2022 15:04

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