2003/01/01 by Stephane Abriet, S. Abriet, D. Karevski +1 · 50 citations
Physics and Astronomy · #Autocorrelation #Critical phenomena #Dynamics (music) #Measure (data warehouse) #Monte Carlo method #Parametric statistics #Physics of Superconductivity and Magnetism #Quantum many-body systems #Theoretical and Computational Physics #Thermodynamic equilibrium #cond-mat.other #cond-mat.stat-mech
paper · pdf · open access · doi:10.1140/epjb/e2004-00029-9
published in The European Physical Journal B 37(1), 47-53 (Springer Science+Business Media) · Revised version
openalex publication_date 2003/01/01 · arxiv created 2004/06/03 · arxiv updated 2015/06/24 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We investigate through Monte Carlo simulations the non-equilibrium behaviour of the three-dimensional XY-model quenched from a high temperature state to its ferromagnetic and critical phases. The two-times autocorrelation and response functions are determined in the asymptotic (scaling) regime, from which the nonequilibrium exponents λ and critical λc are extracted. The form of the scaling function is in agreement with the prediction of local scale-invariance. The so-called limit fluctuation-dissipation ratio X_∞ is shown to vanish in the ordered phase and to reach a constant value around 0.43 for the critical quench.