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Exact Critical Point and Critical Exponents of O ( n ) Models in Two Dimensions

1982; American Physical Society; Volume: 49; Issue: 15 Linguagem: Inglês

10.1103/physrevlett.49.1062

1092-0145

Bernard Nienhuis,

Physics of Superconductivity and Magnetism

A two-dimensional $n$-component spin model with cubic or isotropic symmetry is mapped onto a solid-on-solid model. Subject to some plausible assumptions this leads to an analytic calculation of the critical point and some critical indices for $\ensuremath{-}2<~n<~2$.