Lefèvre Alexandre, Berthier Ludovic, Stinchcombe Robin
Rudolf Peierls Centre for Theoretical Physics, University of Oxford, UK.
Phys Rev E Stat Nonlin Soft Matter Phys. 2005 Jul;72(1 Pt 1):010301. doi: 10.1103/PhysRevE.72.010301. Epub 2005 Jul 19.
We suggest the emergence of spatially correlated dynamics in slowly compacting dense granular media by analyzing analytically and numerically multipoint correlation functions in a simple particle model characterized by slow nonequilibrium dynamics. We show that the logarithmically slow dynamics at large times is accompanied by spatially extended dynamic structures that resemble the ones observed in glass-forming liquids and dense colloidal suspensions. This suggests that dynamic heterogeneity is another key common feature present in very different jamming materials.
通过在一个以缓慢非平衡动力学为特征的简单粒子模型中对多点关联函数进行解析和数值分析，我们揭示了在缓慢压实的致密颗粒介质中空间关联动力学的出现。我们表明，长时间的对数缓慢动力学伴随着空间扩展的动态结构，这些结构类似于在玻璃形成液体和致密胶体悬浮液中观察到的结构。这表明动态非均匀性是存在于非常不同的阻塞材料中的另一个关键共同特征。
