Anisotropy and marginality in the two-dimensional fully frustrated Ising model

G. Forgacs and E. Fradkin
Phys. Rev. B 23, 3442 – Published 1 April 1981
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Abstract

The effect of anisotropy is investigated in the two-dimensional fully frustrated Ising model on a square lattice. It is shown that the anisotropy acts like a symmetry-breaking field by lowering the symmetries of the ground state. The stress tensor is found to be a relevant operator at T=0. A particular form of anisotropy which does not destroy the critical behavior is also studied. The introduction of a special second-neighbor interaction leads to continuous change of the exponent η.

  • Received 20 October 1980

DOI:https://doi.org/10.1103/PhysRevB.23.3442

©1981 American Physical Society

Authors & Affiliations

G. Forgacs*

  • Department of Physics and Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801

E. Fradkin

  • Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801

  • *Permanent address: Central Research Institute for Physics, 1525 Budapest, 114 POB 49, Hungary.

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Issue

Vol. 23, Iss. 7 — 1 April 1981

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