Excess entropy scaling law: A potential energy landscape view.

Saliou, Anthony; Jarry, Philippe; Jakse, Noel · Phys Rev E · 2021

basic_science · Level V

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Abstract

The relationship between excess entropy and diffusion is revisited by means of large-scale computer simulation combined to supervised learning approach to determine the excess entropy for the Lennard-Jones potential. Results reveal a strong correlation with the properties of the potential energy landscape (PEL). In particular the exponential law holding in the liquid is seen to be linked with the landscape-influenced regime of the PEL whereas the fluidlike power-law corresponds to the free diffusion regime.