Liquid Limits: The Glass Transition and Liquid-Gas Spinodal Boundaries of Metastable Liquids

Abstract

The liquid-gas spinodal and the glass transition define ultimate boundaries beyond which substances cannot exist as (stable or metastable) liquids. The relation between these limits is analyzed {\it via} computer simulations of a model liquid. The results obtained indicate that the liquid - gas spinodal and the glass transition lines intersect at a finite temperature, implying a glass - gas mechanical instability locus at low temperatures. The glass transition lines obtained by thermodynamic and dynamic criteria agree very well with each other.

5 pages, 4 figures, to appear in Phys. Rev. Lett

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