Bulletin of the American Physical Society
APS March Meeting 2016
Volume 61, Number 2
Monday–Friday, March 14–18, 2016; Baltimore, Maryland
Session B2: The Edwards Statistical Mechanics
11:15 AM–2:15 PM,
Monday, March 14, 2016
Room: Ballroom II
Sponsoring Units: GSOFT DPOLY GSNP
Chair: Fyl Pincus, University of California, Santa Barbara
Abstract ID: BAPS.2016.MAR.B2.1
Abstract: B2.00001 : Numerical calculation of granular entropy: counting the uncountable.
11:15 AM–11:51 AM
Preview Abstract Abstract
In 1989, Sir Sam Edwards introduced the concept of `granular entropy', defined as the logarithm of the number of distinct packings of N granular particles in a fixed volume V. The proposal was rather controversial but much of the debate was sterile because the granular entropy could not even be computed for systems as small as 20 particles - hardly a good approximation of the thermodynamic limit. In my talk I will describe how granular entropies of much larger systems can now be computed, using a novel algorithm. Interestingly, it turns out the definition of granular entropy will have to be modified to guarantee that granular entropy is extensive.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2016.MAR.B2.1
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