Abstract
Two-dimensional criticality is studied in the Klauder and double-Gaussian models which interpolate from a Gaussian model at to the Ising model at . Despite strong crossover effects for , partial differential approximants for the two-variable susceptibility series indicate criticality of Ising type for all and yield a correction exponent . The conjecture in the absence of a related critical operator, and the observation in the Klauder, double-Gaussian, and models, are discussed.
- Received 18 July 1984
DOI:https://doi.org/10.1103/PhysRevLett.53.1935
©1984 American Physical Society