期刊
JOURNAL OF CHEMICAL PHYSICS
卷 131, 期 2, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3168404
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资金
- CONICET
- Universidad Nacional de Cordoba
- Universidad Nacional de La Plata
- ANPCyT (Argentina) [PICT 20472/04, PICT 33305/05]
- ICTP (Italy)
Although intuitively appealing, the concept of spinodal is rigorously defined only in systems with infinite range interactions (mean-field systems). In short-range systems, a pseudospinodal can be defined by extrapolation of metastable measurements, but the point itself is not reachable because it lies beyond the metastability limit. In this work we show that a sensible definition of spinodal points can be obtained through the short time dynamical behavior of the system deep inside the metastable phase by looking for a point where the system shows critical behavior. We show that spinodal points obtained by this method agree both with the thermodynamical spinodal point in mean-field systems and with the pseudospinodal point obtained by extrapolation of metaequilibrium behavior in short-range systems. With this definition, a practical determination can be achieved without regard for equilibration issues. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3168404]
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