Signatures of Dynamical Heterogeneity in the Structure of Glassy Free-energy Minima
arXiv:0711.4269 · doi:10.1103/PhysRevLett.100.125701
Abstract
From numerical minimization of a model free energy functional for a system of hard spheres, we show that the width of the local peaks of the time-averaged density field at a glassy free-energy minimum exhibits large spatial variation, similar to that of the ``local Debye-Waller factor'' in simulations of dynamical heterogeneity. Molecular dynamics simulations starting from a particle configuration generated from the density distribution at a glassy free-energy minimum show similar spatial heterogeneity in the degree of localization, implying a direct connection between dynamical heterogeneity and the structure of glassy free energy minima.
arXiv comment5 pages, 5 figures
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Cited by in corpus (5)
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- Non-hyperuniform metastable states around a disordered hyperuniform state of densely packed spheres: stochastic density functional theory at strong coupling
- The potential energy landscape and inherent dynamics of a hard-sphere fluid
- Replica Field Theory for a Generalized Franz--Parisi Potential of Inhomogeneous Glassy Systems: New Closure and the Associated Self-Consistent Equation