Frustration induced chimeras and motion in two dimensional swarmalators

Abstract

Swarmalators are oscillators that combine the properties of swarming systems and coupled oscillators, providing a framework to study systems where individual agents synchronize their internal states and simultaneously organize their spatial positions, making them potential candidates for replicating complex dynamical states. In this work, we explore the effects of a frustration parameter in the phase interaction functions of a two-dimensional swarmalator model inspired by the solvable Sakaguchi-swarmalators that move in a one-dimensional ring. The impact of the frustration parameter in these models has been a topic of great interest. Real-world coupled systems with frustration exhibit remarkable collective dynamical states, underscoring the relevance of this study. The frustration parameter induces various states exhibiting non-stationarity, chimeric clustering where swarmalators split into distinct groups that exhibit synchronized and unsynchronized behavior, both in their oscillatory phases and spatial positions, and global translational motion, where swarmalators move spontaneously in two-dimensional space. We investigate the characteristics of these states and their responses to changes in the frustration parameter. Notably, the emergence of chimeric states suggests the crucial role of non-stationarity in phase interactions for spontaneous population clustering. Additionally, we examine how phase non-stationarity influences the spatial positions of swarmalators and provide a classification of these states based on different order parameters.