Non-equilibrium phase transition in an exactly solvable driven Ising model with friction

Details Non-equilibrium phase transition in an exactly solvable driven Ising model with friction Non-equilibrium phase transition in an exactly solvable driven Ising model with friction

2009-09-02

arxiv.org/abs/0909.0533v2

Phys. Rev. E 80, 061138 (2009)

Physics

Condensed Matter

Statistical Mechanics

14 pages

Scientific paper

10.1103/PhysRevE.80.061138

A driven Ising model with friction due to magnetic correlations has recently been proposed by Kadau et al. (Phys. Rev. Lett. 101, 137205 (2008)). The non-equilibrium phase transition present in this system is investigated in detail using analytical methods as well as Monte Carlo simulations. In the limit of high driving velocities $v$ the model shows mean field behavior due to dimensional reduction and can be solved exactly for various geometries. The simulations are performed with three different single spin flip rates: the common Metropolis and Glauber rates as well as a multiplicative rate. Due to the non-equilibrium nature of the model all rates lead to different critical temperatures at $v>0$, while the exact solution matches the multiplicative rate. Finally, the cross-over from Ising to mean field behavior as function of velocity and system size is analysed in one and two dimensions.

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