Monte-Carlo simulation of supercooled liquids using a self-consistent local temperature

Details Monte-Carlo simulation of supercooled liquids using a self-consistent local temperature Monte-Carlo simulation of supercooled liquids using a self-consistent local temperature

2006-01-14

arxiv.org/abs/cond-mat/0601313v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

16 pages, 4 figures

Scientific paper

10.1016/j.physleta.2005.10.036

We combine Creutz energy conservation with Kawasaki spin exchange to simulate the microcanonical dynamics of a system of interacting particles. Relaxation occurs via Glauber spin-flip activation using a self-consistent temperature. Heterogeneity in the dynamics comes from finite-size constraints on the spin exchange that yield a distribution of correlated regions. The simulation produces a high-frequency response that can be identified with the boson peak, and a lower-frequency peak that contains non-Debye relaxation and non-Arrhenius activation, similar to the primary response of supercooled liquids.

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