The physics of higher-order interactions in complex systems

Complex networks have become the main paradigm for modelling dynamics of interacting systems. However, are intrinsically limited to describing pairwise interactions, whereas real-world systems often characterized by higher-order interactions involving groups three or more units. Higher-order structures, such as hypergraphs and simplicial complexes, therefore a better tool map real organization many social, biological man-made Here, we highlight recent evidence collective behaviours induced outline key challenges physics Network representations complex but involve interactions. This Perspective looks at new emerging from attempts characterize these