2004/04/30 by Christophe Chatelain
Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Quantum many-body systems #Theoretical and Computational Physics #cond-mat.stat-mech
paper · pdf · doi:10.1088/1742-5468/2004/06/p06006
published as J. Stat. Mech.: Theor. Exp. - (2004) P06006 · 17 pages
arxiv created 2004/06/17 · openalex publication_date 2004/06/22 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30
This work is a contribution to the study of universality in out-of-equilibrium lattice models undergoing a second-order phase transition at equilibrium. The experimental protocol that we have chosen is the following: the system is prepared in its high-temperature phase and then quenched at the critical temperature T c . We investigated by means of Monte Carlo simulations two quantities that are believed to take universal values: the exponent λ/ z obtained from the decay of autocorrelation functions, and the asymptotic value of the fluctuation–dissipation ratio X ( t , s ). This protocol was applied to the Ising model, the 3-state clock model and the 4-state Potts model on square, triangular and honeycomb lattices and to the Ashkin–Teller model at the point belonging at equilibrium to the 3-state Potts model universality class and to a multispin Ising model and the Baxter–Wu model both belonging to the 4-state Potts model universality class at equilibrium.