论文标题
群体感应活动粒子的临界行为
Critical behavior of quorum-sensing active particles
论文作者
论文摘要
是否所有关键的活动粒子属于同一普遍性类别，仍然是一个有争议的问题。在这里，我们从数值上研究了群体感测活动粒子的临界行为，该粒子代表用于解释运动诱导的相分离的原型模型。平均场理论预测，如果粒子在感应邻居的存在时颗粒足够缓慢，并且共存线在临界点终止，则该模型应进行全相分离。通过执行大规模数值模拟，我们确认了这种情况，找到临界点并使用有限尺寸的缩放分析，以表明该活动系统的静态和动态关键指数与Ising通用性类一致
It is still a debated issue whether all critical active particles belong to the same universality class. Here we numerically study the critical behavior of quorum sensing active particles that represents the archetypal model for interpreting motility-induced phase separation. Mean-field theory predicts that this model should undergo a full phase separation if particles slow-down enough when sensing the presence of their neighbours and that the coexistence line terminates in a critical point. By performing large-scale numerical simulations we confirm this scenario, locate the critical point and use finite-size scaling analysis to show that the static and dynamic critical exponents of this active system agree with the Ising universality class
