Non-Universal Critical Behaviour of Two-Dimensional Ising Systems
نویسندگان
چکیده
Two conditions are derived for Ising models to show non-universal critical behaviour, namely conditions concerning 1) logarithmic singularity of the specific heat and 2) degeneracy of the ground state. These conditions are satisfied with the eight-vertex model, the Ashkin-Teller model, some Ising models with shortor long-range interactions and even Ising systems without the translational or the rotational invariance.
منابع مشابه
Statistical and Computational Physics
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تاریخ انتشار 2004