EAP - Proceedings of the Estonian Academy of Sciences

PUBLISHED
SINCE 1952

proceedings
of the estonian academy of sciences

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A modification of the soft potential model of glasses; pp. 33–36

PDF | doi: 10.3176/proc.2014.1.06

Authors

Jaak Kikas, Inna Rebane

Abstract

Replacement of the cubic term in the soft potential model of glasses with a linear one can be interpreted as an introduction of the internal pressure (coefficient of the linear term), additive to the applied external pressure. It makes the potential unique and removes the ambiguity, present in the conventional representation (different choices of the origin). Pressure-induced transformation of soft systems becomes in the new representation extremely simple – they evolve with the pressure along straight lines. The “sea-gull” distribution of the soft potential parameters transforms into a uniform one in these new variables.

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