A physical phenomenon that occurs in macroscopic systems and consists in the following. In certain equilibrium states of the system an arbitrary small influence leads to a sudden change of its properties: the system passes from one homogeneous phase to another. Mathematically, a phase transition is treated as a sudden change of the structure and properties of the so-called Gibbs distributions describing the equilibrium states of the system, for arbitrary small changes of the parameters determining the equilibrium (cf. Gibbs distribution; Gibbs statistical aggregate).
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|||Ya.G. Sinai, "Theory of phase transitions" , Pergamon (1982) (Translated from Russian)|
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Phase transition. R.A. Minlos (originator), Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Phase_transition&oldid=19100