Physics – Computational Physics
Scientific paper
2012-02-29
J. Phys. A: Math. Theor. 45 (2012) 115001
Physics
Computational Physics
16 pages, 16 figures, 3 tables
Scientific paper
10.1088/1751-8113/45/11/115001
With Monte Carlo methods, we investigate the universality class of the depinning transition in the two-dimensional Ising model with quenched random fields. Based on the short-time dynamic approach, we accurately determine the depinning transition field and both static and dynamic critical exponents. The critical exponents vary significantly with the form and strength of the random fields, but exhibit independence on the updating schemes of the Monte Carlo algorithm. From the roughness exponents $\zeta, \zeta_{loc}$ and $\zeta_s$, one may judge that the depinning transition of the random-field Ising model belongs to the new dynamic universality class with $\zeta \neq \zeta_{loc}\neq \zeta_s$ and $\zeta_{loc} \neq 1$. The crossover from the second-order phase transition to the first-order one is observed for the uniform distribution of the random fields, but it is not present for the Gaussian distribution.
Qin X. P.
Zheng Bing
Zhou N. J.
No associations
LandOfFree
Universality class of the depinning transition in the two-dimensional Ising model with quenched disorder 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 Universality class of the depinning transition in the two-dimensional Ising model with quenched disorder, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Universality class of the depinning transition in the two-dimensional Ising model with quenched disorder will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-523943