Journal of Physics A Mathematical and General

Nonuniversal critical behaviour in planar Ising models with extended, radially symmetric defects

R. Z. Bariev, Ingo Peschel

Published Jan 21, 1991• 16 citations

Abstract

Using conformal mapping and finite-size scaling the authors determine the local magnetic exponent near a defect characterized by couplings of the form J(r)=J(1+A/r). In accordance with phenomenological considerations, they find that it depends continuously on the amplitude A, both for a defect in the interior and on the boundary.

DOI: 10.1088/0305-4470/24/2/007

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