ar X iv : h ep - l at / 9 50 10 03 v 1 5 J an 1 99 5 1 First order phase transitions of spin systems ∗
نویسنده
چکیده
First order phase transitions are easily described in terms of the competition between two phases (see e.g. [1]). Consider for definiteness a temperature driven phase transition between a disordered phase and a q-fold degenerate ordered phase of free energy fd(β) and fo(β). In order to use numerical methods, one needs to know the behavior of statistical averages in a finite volume, close to the transition point. This was more or less correctly guessed by several authors [2,3], and put on rigorous footing (at least for a class of models including the large q Potts model) in Ref [4,5] where the partition function is shown to behave like
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