Friday, June 7, 2013

1306.1371 (Diana Thongjaomayum et al.)

Effect of Coordination Number on Nonequilibrium Critical Point    [PDF]

Diana Thongjaomayum, Prabodh Shukla
We study the nonequilibrium critical point of the zero temperature random field Ising model on a triangular lattice and compare it with known results on honeycomb, square, and simple cubic lattices. We suggest that the coordination number of the lattice rather than its dimension plays the key role in determining the universality class of the nonequilibrium critical behavior. This is discussed in the context of numerical evidence that equilibrium and nonequilibrium critical points of the zero-temperature random field Ising model belong to the same universality class. The physics of this curious result is not fully understood.
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