Journal
PHYSICAL REVIEW LETTERS
Volume 89, Issue 9, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.89.095702
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The predictions of a nonequilibrium schematic mode-coupling theory developed to describe the nonlinear rheology of soft glassy materials have been numerically tested in a sheared binary Lennard-Jones mixture. In this Letter, we focus on the existence, behavior, and properties of an effective temperature T-eff for the slow modes of the fluid, as defined from a generalized fluctuation-dissipation theorem. New, simple experimental protocols to access T-eff are proposed, and one such experiment is numerically performed. Our results give strong support to the thermodynamic interpretation of T-eff and make it experimentally accessible in a very direct way.
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