Fig. 2: Thermodynamics of various frictional systems.
From: Testing Adam-Gibbs relationship in tapped granular packings
a The steady state packing fraction \(\phi\) as a function of tap intensity \(\Gamma\), for BUMP (blue Deltas), 3DP (green diamonds), ABS2 (yellow squares), and ABS1 (red circles) systems. b Coarse-grained Voronoi volume variance \({\mathrm{var}}\left(V\right)\) as a function of \(\phi\). The solid curve is a cubic polynomial fit. c Inversed compactivity \(1/\chi\) as a function of \(\phi\). d Configurational entropy \({S}_{c}\) as a function of \(\phi\).
