Blum Nicholas, Li Andre, O'Keeffe Kevin, Kogan Oleg
California Polytechnic State University, San Luis Obispo, California 93407, USA.
Department of Physics, California State University, East Bay, California 94542, USA.
Phys Rev E. 2024 Jan;109(1-1):014205. doi: 10.1103/PhysRevE.109.014205.
We investigate the effects of delayed interactions in a population of "swarmalators," generalizations of phase oscillators that both synchronize in time and swarm through space. We discover two steady collective states: a state in which swarmalators are essentially motionless in a disk arranged in a pseudocrystalline order, and a boiling state in which the swarmalators again form a disk, but now the swarmalators near the boundary perform boiling-like convective motions. These states are reminiscent of the beating clusters seen in photoactivated colloids and the living crystals of starfish embryos.
我们研究了延迟相互作用对一群“群体振荡器”的影响，群体振荡器是相位振荡器的推广，它们既能在时间上同步，又能在空间中群体聚集。我们发现了两种稳定的集体状态：一种状态是群体振荡器在以伪晶序排列的圆盘中基本静止不动；另一种沸腾状态是群体振荡器再次形成一个圆盘，但此时边界附近的群体振荡器会进行类似沸腾的对流运动。这些状态让人联想到光激活胶体中出现的跳动簇以及海星胚胎的活体晶体。
