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• #### Correlation between Voronoi volumes in disc packings ﻿

(EPL (Europhysics Letters), 2012-02-01)
We measure the two-point correlation of free Voronoi volumes in binary disc packings, where the packing fraction $\phi_{\rm avg}$ ranges from 0.8175 to 0.8380. We observe short-ranged correlations over the whole range of ...
• #### Stationary state volume fluctuations in a granular medium. ﻿

(Physical review. E, Statistical, nonlinear, and soft matter physics, 2005-03-30)
A statistical description of static granular material requires ergodic sampling of the phase space spanned by the different configurations of the particles. We periodically fluidize a column of glass beads and find that ...