R. Shrock et Sh. Tsai, GROUND-STATE ENTROPY AND THE Q=3 POTTS ANTIFERROMAGNET ON THE HONEYCOMB LATTICE, Journal of physics. A, mathematical and general, 30(2), 1997, pp. 495-500
We study the q-state Potts antiferromagnet with q = 3 on the honeycomb
lattice. Using an analytic argument together with a Monte Carlo simul
ation, we conclude that this model is disordered for all T greater tha
n or equal to 0. We also calculate the ground state entropy to be S-0/
k(B) = 0.507(10) and discuss this result.