Relaxations and Rheology near Jamming
Relaxations and Rheology near Jamming
We determine the form of the complex shear modulus ${G}^{*}$ in soft sphere packings near jamming. Viscoelastic response at finite frequency is closely tied to a packing's intrinsic relaxational modes, which are distinct from the vibrational modes of undamped packings. We demonstrate and explain the appearance of an anomalous excess …