Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2005-01-11
Phys. Rev. E 71, 030301(R) (2005)
Physics
Condensed Matter
Statistical Mechanics
published with minor changes
Scientific paper
10.1103/PhysRevE.71.030301
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 the sequence of volume fractions phi of post-fluidized states is history independent and Gaussian distributed about a stationary state. The standard deviation of phi exhibits, as a function of phi, a minimum corresponding to a maximum in the number of statistically independent regions. Measurements of the fluctuations enable us to determine the compactivity X, a temperature-like state variable introduced in the statistical theory of Edwards and Oakeshott [Physica A {\bf 157}, 1080 (1989)].
Goldman Daniel I.
Schröter Matthias
Swinney Harry L.
No associations
LandOfFree
Stationary state volume fluctuations in a granular medium does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Stationary state volume fluctuations in a granular medium, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stationary state volume fluctuations in a granular medium will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-201605