2020/06/30 by Qun‐Li Lei, Qun-Li Lei, Hao Hu +1 · 4 citations
Materials Science · Mathematics · Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Computer science #Condensed matter physics #Critical exponent #Critical point (mathematics) #Criticality #Directed percolation #Dissipative system #Ising model #Material Dynamics and Properties #Mathematics #Noise (video) #Non-equilibrium thermodynamics #Percolation (cognitive psychology) #Phase (matter) #Phase diagram #Phase transition #Physics #Quantum mechanics #Statistical physics #Theoretical and Computational Physics #Thermodynamics #Tricritical point #cond-mat.soft #cond-mat.stat-mech #physics.chem-ph
paper · pdf · doi:10.1103/physreve.103.052607
published in Physical review. E 103(5), 052607 (American Physical Society)
arxiv created 2021/05/04 · openalex publication_date 2021/05/17 · arxiv updated 2021/05/26 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Nonequilibrium critical phenomena generally exist in many dynamic systems, like chemical reactions and some driven-dissipative reactive particle systems. Here, by using computer simulation and theoretical analysis, we demonstrate the crucial role of the activation barrier on the criticality of dynamic phase transitions in a minimal reactive hard-sphere model. We find that at zero thermal noise, with increasing the activation barrier, the type of transition changes from a continuous conserved directed percolation into a discontinuous dynamic transition by crossing a tricritical point. A mean-field theory combined with field simulation is proposed to explain this phenomenon. The possibility of Ising-type criticality in the nonequilibrium system at finite thermal noise is also discussed.