Energy landscapes, ideal glasses, and their equation of state

M. Scott Shell; Pablo G. Debenedetti; Emilia La Nave; Francesco Sciortino

doi:10.1063/1.1566943

Energy landscapes, ideal glasses, and their equation of state

M. Scott Shell, Pablo G. Debenedetti, Emilia La Nave, Francesco Sciortino

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Abstract

A theoretical framework for liquids that incorporates the statistical properties of an energy landscape is presented. The theory provides an explicit expression for the equation of state of a liquid and formally separates the pressure into vibrational and inherent-structure components, both above and below the ideal glass transition. Using the pressure separation, the presence of the Sastry density and its connection to the liquid spinodal is shown. Finally, the theory is used to develop an elementary model of an energy landscape based on soft-sphere particles interacting with an additional mean-field attraction.

Original language	English (US)
Pages (from-to)	8821-8830
Number of pages	10
Journal	Journal of Chemical Physics
Volume	118
Issue number	19
DOIs	https://doi.org/10.1063/1.1566943
State	Published - May 15 2003

All Science Journal Classification (ASJC) codes

General Physics and Astronomy
Physical and Theoretical Chemistry

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AU - Sciortino, Francesco

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AB - A theoretical framework for liquids that incorporates the statistical properties of an energy landscape is presented. The theory provides an explicit expression for the equation of state of a liquid and formally separates the pressure into vibrational and inherent-structure components, both above and below the ideal glass transition. Using the pressure separation, the presence of the Sastry density and its connection to the liquid spinodal is shown. Finally, the theory is used to develop an elementary model of an energy landscape based on soft-sphere particles interacting with an additional mean-field attraction.

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Energy landscapes, ideal glasses, and their equation of state

Abstract

All Science Journal Classification (ASJC) codes

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