Trap models and slow dynamics in supercooled liquids

Physical Review Letters

Volumn 90, Issue 2, 2003, Pages

  Denny, R Aldrin ^a   Reichman, David R ^a   Bouchaud, Jean Philippe ^b  

^a HARVARD UNIVERSITY   (United States)

^b SERVICE DE PHYSIQUE DE L ETAT CONDENSÉ   (France)

Author keywords

[No Author keywords available]

Indexed keywords

ALGORITHMS; COMPUTER SIMULATION; GLASS TRANSITION; MAGNETIC FLUIDS; MOLECULAR DYNAMICS; PHASE SPACE METHODS; PROBABILITY DISTRIBUTIONS; STATISTICS; SUPERCOOLING; TEMPERATURE;

GLASS FORMING LIQUIDS; LENNARD-JONES LIQUIDS; MODE COUPLING THEORY; SUPERCOOLED LIQUIDS;

SPIN GLASS;

EID: 0037449923     PISSN: 00319007     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

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30. While the simulated values of b(T) and those predicted based on the Gaussian trap model with Δ extracted from ψ(τ) are in reasonable agreement (within the error bars), there is a systematic tendency for the trap prediction to underestimate the value of b(T). For large values of τ our statistics for ψ(τ) are poor; however, there does seem to be a slight systematic deviation from log-normal behavior for the largest τ's [not shown in Fig. 2(b)]. Including this curvature change results in slightly larger estimates of b(T). B. Doliwa and A. Heuer (private communication) have demonstrated that their data are consistent with a Gaussian trap model, but with saddle-point values that depend somewhat on the trap depth. This observation is sufficient to explain the small deviations mentioned above. See also the related discussion in [31].
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