标题： 熵驱动的代理 显示英文标题

标题： Entropically Driven Agents

摘要： 代理种群常常表现出从简单的局部交互中涌现的令人惊讶的集体行为。普遍认为，为了使这种涌现的集体行为发生，代理必须具备一定的认知能力水平。然而，与这一假设相反，众所周知，即使是非认知代理也能表现出复杂的非平凡行为。在这里，我们考虑一种中间情况，即代理从两个极端中各借用一点特性。我们假设在一个有界的环境中，在一个正方形格子上，代理执行随机游走。代理可以感知它们的直接邻域，并且会尝试移动到一个随机选择的空闲站点，以避免碰撞。此外，当代理与至少两个其他代理接触时，它们会暂时停止移动。我们展示了令人惊讶的是，这样一个简陋的代理群体经历了一次渗透相变，并自我组织成一种大型聚合物状结构，这是由于从它们受限的配位数和局部空间排列中产生的吸引熵力的结果。 显示英文摘要

摘要： Populations of agents often exhibit surprising collective behavior emerging from simple local interactions. The common belief is that the agents must posses a certain level of cognitive abilities for such an emerging collective behavior to occur. However, contrary to this assumption, it is also well known that even noncognitive agents are capable of displaying nontrivial behavior. Here we consider an intermediate case, where the agents borrow a little bit from both extremes. We assume a population of agents performing random-walk in a bounded environment, on a square lattice. The agents can sense their immediate neighborhood, and they will attempt to move into a randomly selected empty site, by avoiding collisions.Also, the agents will temporary stop moving when they are in contact with at least two other agents. We show that surprisingly, such a rudimentary population of agents undergoes a percolation phase transition and self-organizes in a large polymer like structure, as a consequence of an attractive entropic force emerging from their restricted-valence and local spatial arrangement.