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An energy landscape model for glass forming liquids in three dimensions | | Ulf R. Pedersen
; Tina Hecksher
; Jeppe C. Dyre
; Thomas B. Schrøder
; | | Date: |
7 Nov 2005 | | Subject: | Soft Condensed Matter; Disordered Systems and Neural Networks | | Abstract: | We present a three-dimensional lattice-gas model with trivial thermodynamics, but nontrivial dynamics. The model is characterized by each particle having its own random energy landscape. The equilibrium dynamics of the model were investigated by continuous time Monte Carlo simulations at two different densities at several temperatures. At high densities and low temperatures the model captures the important characteristics of viscous liquid dynamics. We thus observe non-exponential relaxation in the self part of the density auto-correlation function, and fragility plots of the self-diffusion constant and relaxation times show non-Arrhenius behavior. | | Source: | arXiv, cond-mat/0511147 | | Services: | Forum | Review | PDF | Favorites | |
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