Directed transport in equilibrium : analysis of the dimer model with inertial terms

Details Directed transport in equilibrium : analysis of the dimer model with inertial terms Directed transport in equilibrium : analysis of the dimer model with inertial terms

2011-08-15

arxiv.org/abs/1108.2927v1

Physics

Condensed Matter

Statistical Mechanics

8 pages, 1 figure

Scientific paper

We have previously shown an analysis of our dimer model in the over-damped regime to show directed transport in equilibrium. Here we analyze the full model with inertial terms present to establish the same result. First we derive the Fokker-Planck equation for the system following a Galilean transformation to show that a uniformly translating equilibrium distribution is possible. Then, we find out the velocity selection for the centre of mass motion using that distribution on our model. We suggest generalization of our calculations for soft collision potentials and indicate to interesting situation with possibility of oscillatory non-equilibrium state within equilibrium.

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