Nominal Thermodynamic Temperature in Nonequilibrium Kinetic Ising Models

2003/08/08 by Francisco Sastre, Ivan Dornic, Hugues Chaté · 6 citations
Physics and Astronomy · #Opinion Dynamics and Social Influence #Quantum many-body systems #Theoretical and Computational Physics #cond-mat.stat-mech

paper · pdf · doi:10.1103/physrevlett.91.267205

published as Phys. Rev. Letters 91, 267205 (2003) · 4 pages, 3 figures

arxiv created 2003/08/08 · openalex publication_date 2003/12/31 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We show that a nominal temperature can be consistently and uniquely defined everywhere in the phase diagram of large classes of nonequilibrium kinetic Ising spin models. In addition, we confirm that, at critical points, the large-time "fluctuation-dissipation ratio" X( infinity ) is a universal amplitude ratio, and find in particular X( infinity ) approximately 0.33(1) and X( infinity )=1 / 2 for the magnetization in, respectively, the two-dimensional Ising and voter universality classes.

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• Temperature in Nonequilibrium Systems with Conserved Energy
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• Schrödinger-invariance in the voter model
• Local scale-invariance and ageing in noisy systems
• Observable dependent quasiequilibrium in slow dynamics
• Nonequilibrium temperatures in steady-state systems with conserved energy

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