Coupled Critical Models: Applications to Ising-Potts Models

Details Coupled Critical Models: Applications to Ising-Potts Models Coupled Critical Models: Applications to Ising-Potts Models

1997-05-28

arxiv.org/abs/cond-mat/9705292v1

Physics

Condensed Matter

Statistical Mechanics

8 pages (Latex), 1 eps figure

Scientific paper

10.1016/S0370-2693(97)00787-9

We discuss the critical behaviour of 2D Ising and q-states Potts models coupled by their energy density. We found new tricritical points. The procedure employed is the renormalisation approach of the perturbations series around conformal field theories representing pure models as already used for disordered spins models. This analysis could be useful to understand the physics of coupled critical models like the fully frustrated XY model.

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