Non-equilibrium fluctuations in a driven stochastic Lorentz gas

Details Non-equilibrium fluctuations in a driven stochastic Lorentz gas Non-equilibrium fluctuations in a driven stochastic Lorentz gas

2011-11-24

arxiv.org/abs/1111.5798v2

Phys. Rev. E 85, 031112 (2012)

Physics

Condensed Matter

Statistical Mechanics

6 pages, 4 figures

Scientific paper

We study the stationary state of a one-dimensional kinetic model where a probe particle is driven by an external field E and collides, elastically or inelastically, with a bath of particles at temperature T. We focus on the stationary distribution of the velocity of the particle, and of two estimates of the total entropy production \Delta s_tot. One is the entropy production of the medium \Delta s_m, which is equal to the energy exchanged with the scatterers, divided by a parameter \theta, coinciding with the particle temperature at E=0. The other is the work W done by the external field, again rescaled by \theta. At small E, a good collapse of the two distributions is found: in this case the two quantities also verify the Fluctuation Relation (FR), indicating that both are good approximations of \Delta s_tot. Differently, for large values of E, the fluctuations of W violate the FR, while \Delta s_m still verifies it.

Affiliated with

Also associated with

No associations

Rating

Non-equilibrium fluctuations in a driven stochastic Lorentz gas does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Non-equilibrium fluctuations in a driven stochastic Lorentz gas, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-equilibrium fluctuations in a driven stochastic Lorentz gas will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-157562