| Autor: |
Dashti H; Australian Institute of Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia.; School of Physics, Korea Institute for Advanced Study, Seoul 02455, Korea., Saberi AA; Department of Physics, University of Tehran, P. O. Box, 14395-547 Tehran, Iran.; Max Planck Institute for the Physics of Complex Systems, 01187 Dresden, Germany., Rahbari SHE; School of Physics, Korea Institute for Advanced Study, Seoul 02455, Korea., Kurths JFSTR; Potsdam Institute for Climate Impact Research, Potsdam, Germany.; Department of Physics, Humboldt University, Berlin, Germany. |
| Abstrakt: |
Jammed granular media and glasses exhibit spatial long-range correlations as a result of mechanical equilibrium. However, the existence of such correlations in the flowing matter, where the mechanical equilibrium is unattainable, has remained elusive. Here, we investigate this problem in the context of the percolation of interparticle forces in flowing granular media. We find that the flow rate introduces an effective long-range correlation, which plays the role of a relevant perturbation giving rise to a spectrum of varying exponents on a critical line as a function of the flow rate. Our numerical simulations along with analytical arguments predict a crossover flow rate [Formula: see text] below which the effect of induced disorder is weak and the universality of the force chain structure is shown to be given by the standard rigidity percolation. We also find a power-law behavior for the critical exponents with the flow rate [Formula: see text]. |
