Effective Temperatures of a Driven System Near Jamming

Details Effective Temperatures of a Driven System Near Jamming Effective Temperatures of a Driven System Near Jamming

2001-10-13

arxiv.org/abs/cond-mat/0110276v1

Phys. Rev. Lett. 89, 095703 (2002)

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 4 postscript figures

Scientific paper

10.1103/PhysRevLett.89.095703

Fluctuations in a model of a sheared, zero-temperature foam are studied numerically. Five different quantities that reduce to the true temperature in an equilibrium thermal system are calculated. All five have the same shear-rate dependence, and three have the same value. Near the onset of jamming, the relaxation time is the same function of these three temperatures in the sheared system as of the true temperature in an unsheared system. These results imply that statistical mechanics is useful for the system and provide strong support for the concept of jamming.

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