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dc.contributor.authorSchroeter, Matthiasen_US
dc.contributor.authorGoldman, Daniel I.en_US
dc.contributor.authorSwinney, Harry L.en_US
dc.date.accessioned2012-08-21T19:48:59Z
dc.date.available2012-08-21T19:48:59Z
dc.date.issued2005-03-30
dc.identifier.citationMatthias Schroeter, Daniel I. Goldman and Harry L. Swinney, "Stationary state volume fluctuations in a granular medium," Physical Review E Rapid Communications, 71, 030301 (2005)en_US
dc.identifier.issn1539-3755
dc.identifier.urihttp://hdl.handle.net/1853/44560
dc.description© 2005 The American Physical Societyen_US
dc.descriptionThe electronic version of this article is the complete one and can be found online at: http://link.aps.org/doi/10.1103/PhysRevE.71.030301en_US
dc.descriptionDOI: 10.1103/PhysRevE.71.030301en_US
dc.description.abstractA 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 ϕ of postfluidized states is history independent and Gaussian distributed about a stationary state. The standard deviation of ϕ exhibits, as a function of ϕ, 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 temperaturelike state variable introduced in the statistical theory of Edwards and Oakeshott [Physica A 157, 1080 (1989)].en_US
dc.language.isoen_USen_US
dc.publisherGeorgia Institute of Technologyen_US
dc.subjectGranular systemsen_US
dc.subjectFluctuation phenomenaen_US
dc.subjectRandom processesen_US
dc.subjectNoiseen_US
dc.subjectBrownian motionen_US
dc.subjectEquations of state of specific substancesen_US
dc.subjectParticle-laden flowsen_US
dc.titleStationary state volume fluctuations in a granular mediumen_US
dc.typeArticleen_US
dc.contributor.corporatenameGeorgia Institute of Technology. School of Physicsen_US
dc.contributor.corporatenameUniversity of Texas at Austin. Center for Nonlinear Dynamicsen_US
dc.contributor.corporatenameUniversity of Texas at Austin. Dept. of Physicsen_US
dc.publisher.originalAmerican Physical Societyen_US


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