论文标题
运动诱导的相分离的主动晶格模型中的临界行为
Critical behaviour in active lattice models of motility-induced phase separation
论文作者
论文摘要
与非晶格系统相比，晶格模型允许对运动诱导的相分离（MIP）进行计算有效研究。仿真要求较少，因此可以以更高的准确性和更好的统计数据来访问更大的系统。在平衡中，具有可比相互作用的晶格和晶格模型属于同一普遍性类别。普遍性的概念是否也适用于主动粒子仍然是一个有争议和开放的问题。在这里，我们研究了两个最近提出的活跃晶格系统，这些晶格系统经历了MIP并在数值上研究其临界行为。特别是，我们研究了这些系统和MIP通常属于Ising普遍性类别的说法。我们还对这些系统中旋转扩散和主动速度的影响和作用进行了更详细的了解。
Lattice models allow for a computationally efficient investigation of motility-induced phase separation (MIPS) compared to off-lattice systems. Simulations are less demanding and thus bigger systems can be accessed with higher accuracy and better statistics. In equilibrium, lattice and off-lattice models with comparable interactions belong to the same universality class. Whether concepts of universality also hold for active particles is still a controversial and open question. Here, we examine two recently proposed active lattice systems that undergo MIPS and investigate numerically their critical behaviour. In particular, we examine the claim that these systems and MIPS in general belong to the Ising universality class. We also take a more detailed look on the influence and role of rotational diffusion and active velocity in these systems.
