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Stress in dense granular materials and other athermal particle aggregates istransmitted through a visually striking subnetwork of interparticle contacts,the filamentary segments of which are referred to as force chains. Theemergence of such preferred subnetwork in structurally disordered media withconstituents interacting primarily by physical contact is not fully understood.In this work, we study locally correlated transport in Random Geometric Graphs(RGGs), and show the spontaneous emergence of preferred subnetwork. Ourfindings reveal that, despite structural disorder, system spanning localizationof fluxes transmitted through a spatial network can emerge from short rangedcorrelations. The spatial and statistical features of the subnetwork aresurprisingly similar to the strong force network in simulated grain assemblies,and provides insights on the structure and spatial scale of significance of theforce chains.

Emergence of preferred subnetwork for correlated transport in spatial  networks: On the ubiquity of force chains in dense disordered granular  materials