title: Scaling and universality in the two-dimensional Ising model with a magnetic field.
abstract: The scaling function of the two-dimensional Ising model on the square and triangular lattices is obtained numerically via Baxter's variational corner transfer-matrix approach. The use of Aharony-Fisher nonlinear scaling variables allowed us to perform calculations sufficiently away from the critical point and to confirm all predictions of the scaling and universality hypotheses. Our results are in excellent agreement with quantum field theory calculations of Fonseca and Zamolodchikov as well as with many previously known exact and numerical calculations, including susceptibility results by Barouch, McCoy, Tracy, and Wu.
authors.affiliation: Department of Theoretical Physics, Research School of Physics and Engineering, Australian National University, Canberra, Australian Capital Territory 0200, Australia. vvm105@physics.anu.edu.au
authors.forename: Vladimir V
authors.initials: VV
authors.lastname: Mangazeev
authors.forename: Michael Yu
authors.initials: MY
authors.lastname: Dudalev
authors.forename: Vladimir V
authors.initials: VV
authors.lastname: Bazhanov
authors.forename: Murray T
authors.initials: MT
authors.lastname: Batchelor