Gauged O ( n ) spin models in one dimension

We consider a gauged O(n) spin model, n ≥ 2 , in one dimension which contains both the pure O(n) and RP n−1 spin models and which interpolates between them. Various formulations of this theory are given, one of which shows that it belongs to a general set of models for which it has been suggested that, for n > 2, three distinct universality classes exist… CONTINUE READING