论文标题
反应性粒子系统中屏障控制的非平衡关键性
Barrier-Controlled Non-Equilibrium Criticality in Reactive Particle Systems
论文作者
论文摘要
非平衡临界现象通常存在于许多动态系统中，例如化学反应和某些驱动的{反应性}粒子系统。在这里，通过使用计算机模拟和理论分析，我们证明了激活屏障在最小的反应性硬球模型中动态相变的关键性的关键作用。我们发现，随着激活屏障的增加，在零热噪声下，通过越过\ emph {tricricition}点，过渡的类型从连续保守的定向渗透变为不连续的动态转变。提出了一种与现场模拟结合的平均场理论来解释这种现象。还讨论了在有限的热噪声下非平衡系统中ISING型关键的可能性。
Non-equilibrium 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 \emph{tricritical} point. A mean-field theory combined with field-simulation is proposed to explain this phenomenon. The possibility of Ising-type criticality in the non-equilibrium system at finite thermal noise is also discussed.
