General aspects of the Fluctuation–Dissipation Relation (FDR), and Response Theory are
considered. After analyzing the conceptual and historical relevance of fluctuations in …

Starting from the observations that powders have a large number of particles, and
reproducible properties, we show how statistical mechanics applies to powders. The volume …

Non-Gaussian properties (cumulants, high energy tails) of the single particle velocity
distribution for homogeneous granular fluids of inelastic hard spheres or disks are studied …

In the Brazil nut problem (BNP), hard spheres with larger diameters rise to the top. There are
various explanations (percolation, reorganization, convection), but a broad understanding or …

Granular materials are ubiquitous in nature and are also employed in many industrial
settings such as those involving chemical processes, pharmaceutical products, mining, and …

Abstract Direct Monte Carlo simulations of the Enskog-Boltzmann equation for a spatially
uniform system of smooth inelastic spheres are performed. In order to reach a steady state …

Diffusing-wave spectroscopy was used to measure the microscopic dynamics of grains in
the interior of a three-dimensional flow of sand. The correlation functions show that minutely …

We investigate the properties of a model of granular matter consisting of N Brownian
particles on a line, subject to inelastic mutual collisions. This model displays a genuine …

The nonequilibrium steady state of a granular fluid, driven by a random external force, is
demonstrated to exhibit long-range correlations, which behave as∼ 1/r in three and∼ ln …

We measure time-averaged velocity, density, and temperature fields for steady granular flow
past a wedge. We find the flow to be supersonic with a speed of granular pressure …