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 . 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 .
- Received 20 October 1980
DOI:https://doi.org/10.1103/PhysRevB.23.3442
©1981 American Physical Society