NDLI: Thermodynamics and transport in an active Morse ring chain

Content Provider	Springer Nature Link
Author	Dunkel, J. Ebeling, W. Erdmann, U.
Copyright Year	2001
Abstract	We investigate the stochastic dynamics of an one-dimensional ring with N self-driven Brownian particles. In this model neighboring particles interact via conservative Morse potentials. The influence of the surrounding heat bath is modeled by Langevin-forces (white noise) and a constant viscous friction coefficient γ. The Brownian particles are provided with internal energy depots which may lead to active motions of the particles. The depots are realized by an additional nonlinearly velocity-dependent friction coefficient γ 1(v) in the equations of motions. In the first part of the paper we study the partition functions of time averages and thermodynamical quantities (e.g. pressure) characterizing the stationary physical system. Numerically calculated non-equilibrium phase diagrams are represented. The last part is dedicated to transport phenomena by including a homogeneous external force field that breaks the symmetry of the model. Here we find enhanced mobility of the particles at low temperatures.
Starting Page	511
Ending Page	524
Page Count	14
File Format	PDF
ISSN	14346028
Journal	The European Physical Journal B
Volume Number	24
Issue Number	4
e-ISSN	14346036
Language	English
Publisher	EDP Sciences, Springer-Verlag
Publisher Date	2001-12-01
Publisher Place	Les Ulis
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Condensed Matter Physics

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