Are there localized saddles behind the heterogeneous dy- namics of supercooled liquids?
msra(2006)
摘要
We numerically study the interplay between heterogeneous dynamics and prop- erties of negatively curved regions of the potential energy surface in a model glassy system. We find that the unstable modes of saddles and quasi-saddles undergo a localization transition close to the Mode-Coupling critical temperature. We also find evidence of a positive spatial correlation between clusters of particles having large displacements in the unstable modes and dynamical heterogeneities.
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关键词
computer simulation,spatial correlation,supercooled liquid,potential energy surface,glass transition,critical temperature
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