6533b833fe1ef96bd129ba31
RESEARCH PRODUCT
Fluctuation dissipation ratio in an aging Lennard-Jones glass
Walter KobJean-louis Barratsubject
PhysicsCondensed matter physicsStatistical Mechanics (cond-mat.stat-mech)General Physics and AstronomyFOS: Physical sciencesFunction (mathematics)Disordered Systems and Neural Networks (cond-mat.dis-nn)Condensed Matter - Disordered Systems and Neural NetworksDissipationMolecular dynamicsPhase spacePiecewiseConstant functionSymmetry breakingCondensed Matter - Statistical MechanicsSpin-½description
By using extensive Molecular Dynamics simulations, we have determined the violation of the fluctuation-dissipation theorem in a Lennard-Jones liquid quenched to low temperatures. For this we have calculated $X(C)$, the ratio between a one particle time-correlation function $C$ and the associated response function. Our results are best fitted by assuming that $X(C)$ is a discontinuous, piecewise constant function. This is similar to what is found in spin systems with one step replica symmetry breaking. This strengthen the conjecture of a similarity between the phase space structure of structural glasses and such spin systems.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1998-06-02 |