Phase transitions in the Potts spin glass model

Details Phase transitions in the Potts spin glass model Phase transitions in the Potts spin glass model

1998-04-03

arxiv.org/abs/cond-mat/9804037v1

Phys. Rev. E 58, 2753-2759 (1998)

Physics

Condensed Matter

Statistical Mechanics

8 pages, Latex, with 8 EPS figs

Scientific paper

10.1103/PhysRevE.58.2753

We have studied the Potts spin glass with 2-state Ising spins and s-state Potts variables using a cluster Monte Carlo dynamics. The model recovers the +- J Ising spin glass (SG) for s=1 and exhibits for all s a SG transition at T_{SG}(s) and a percolation transition at higher temperature T_p(s). We have shown that for all values of $s\neq 1$ at T_p(s) there is a thermodynamical transition in the universality class of a ferromagnetic s-state Potts model. The efficiency of the cluster dynamics is compared with that of standard spin flip dynamics.

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