Quasi-asymptotic freedom in the two dimensional O(3) model

Abstract

The behaviour of the renormalized spin 2-point function in the O(3) and dodecahedron spin model are investigated numerically. The Monte Carlo data show excellent agreement between the two models. The short distance behavior comes very close to standard theoretical expectations, yet it differs significantly from it. A possible explanation of this situation is offered.

Comments: 4 pages, 4 figures