Generalized Chiral Universality
1990 年 59 巻 7 号 p. 2305-2308
詳細
1990 年 59 巻 7 号 p. 2305-2308
On the basis of symmetry and renormalization-group analysis, it is shown that there exists a hyperseries of universality classes characterized by two integers, m and n where m≤n, that is associated with essentially m-dimensional noncollinear spin ordering driven by the O(n)-symmetric interaction. This hyperseries includes, as special cases, standard O(n) Heisenberg universality (m=1) as well as the recently identified O(n) planar-chiral universality (m=2). Various exponents are calculated by the ε=4−d and 1⁄n expansions.
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