Abstract
A generalization of the nonlinear model is considered. The field takes values in a compact manifold and the coupling is determined by a Riemannian metric on . The model is renormalizable in dimensions, the renormalization group acting on the infinite-dimensional space of Riemannian metrics. Topological properties of the function and solutions of the fixed-point equation , , are discussed.
- Received 28 May 1980
DOI:https://doi.org/10.1103/PhysRevLett.45.1057
©1980 American Physical Society