论文标题
信号的集体运动
Collective Movement with Signaling
论文作者
论文摘要
我们认为，一群流动媒介能够对环境进行嘈杂的观察，并通过产生和理解信号来传达其观察。个人试图使自己的运动方向与邻居保持一致。此外，他们试图集体寻找并朝着环境方向前进。我们表明，当知情个体的比例很小时，通过增加通信的噪声（类似于Viscek模型）时，该模型显示出不连续的订单disorder disorder-disorder transition，并具有强大的有限尺寸效应。相比之下，对于大量知情的个体，可以从有序阶段转变为无序阶段，而不会通过任何相变。有序相由两个阶段组成，这些阶段被不连续的过渡隔开。知情的集体运动，人口集体侵入正确的环境方向，这是针对知情人士的高部分。当知情人物的比例低，集体误解时，人口未能找到环境方向也变得稳定。此外，我们表明信号产生的噪声量对人群的推理能力更有害，并增加了密度波动和组碎片的概率，与理解中的噪声相比。
We consider a population of mobile agents able to make noisy observation of the environment and communicate their observation by production and comprehension of signals. Individuals try to align their movement direction with their neighbors. Besides, they try to collectively find and travel towards an environmental direction. We show that, when the fraction of informed individuals is small, by increasing the noise in communication, similarly to the Viscek model, the model shows a discontinuous order-disorder transition with strong finite size effects. In contrast, for large fraction of informed individuals, it is possible to go from the ordered phase to the disordered phase without passing any phase transition. The ordered phase is composed of two phases separated by a discontinuous transition. Informed collective motion, in which the population collectively infers the correct environmental direction, occurs for high fraction of informed individuals. When the fraction of informed individuals is low, misinformed collective motion, where the population fails to find the environmental direction becomes stable as well. Besides, we show that an amount of noise in the production of signals is more detrimental for the inference capability of the population, and increases the density fluctuations and the probability of group fragmentation, compared to the same amount of noise in the comprehension.
