Add to ORKGIt is shown that mean-field theory fails to give a correct qualitative picture of the thermodynamic behavior of the q-state Potts model when the exchange interaction is anisotropic in spin space. The correct picture is recovered either by introducing a single-particle anisotropy or by taking correlations into account via a Bethe-Peierls approximation. This analysis helps the interpretation of previous renormalization-group results for asymmetric Potts models
It is shown how Onsager's reaction field may be incorporated in mean-field-like calculations for the...
[[abstract]]A spin model called the anisotropic exchange-interaction model is proposed. The Potts mo...
26 pages, 1 figureWe prove phase transition for the non-symmetric continuum Potts model with backgro...
It is shown that mean-field theory fails to give a correct qualitative picture of the thermodynamic ...
It is shown that mean-field theory fails to give a correct qualitative picture of the thermodynamic ...
[[abstract]]It is shown that in the mean-field theory the spin-S exchange interaction model and the ...
We construct the exact partition function of the Potts model on a complete graph subject to external...
We construct the exact partition function of the Potts model on a complete graph subject to external...
We construct the exact partition function of the Potts model on a complete graph subject to external...
A class of random-site mean-field Potts models is introduced and solved exactly. The bifurcation pro...
A class of random-site mean-field Potts models is introduced and solved exactly. The bifurcation pro...
A class of random-site mean-field Potts models is introduced and solved exactly. The bifurcation pro...
A class of random-site mean-field Potts models is introduced and solved exactly. The bifurcation pro...
It is shown how Onsager’s reaction field may be incorporated in mean-field-like calculations for the...
It is shown how Onsager's reaction field may be incorporated in mean-field-like calculations for the...
It is shown how Onsager's reaction field may be incorporated in mean-field-like calculations for the...
[[abstract]]A spin model called the anisotropic exchange-interaction model is proposed. The Potts mo...
26 pages, 1 figureWe prove phase transition for the non-symmetric continuum Potts model with backgro...
It is shown that mean-field theory fails to give a correct qualitative picture of the thermodynamic ...
It is shown that mean-field theory fails to give a correct qualitative picture of the thermodynamic ...
[[abstract]]It is shown that in the mean-field theory the spin-S exchange interaction model and the ...
We construct the exact partition function of the Potts model on a complete graph subject to external...
We construct the exact partition function of the Potts model on a complete graph subject to external...
We construct the exact partition function of the Potts model on a complete graph subject to external...
A class of random-site mean-field Potts models is introduced and solved exactly. The bifurcation pro...
A class of random-site mean-field Potts models is introduced and solved exactly. The bifurcation pro...
A class of random-site mean-field Potts models is introduced and solved exactly. The bifurcation pro...
A class of random-site mean-field Potts models is introduced and solved exactly. The bifurcation pro...
It is shown how Onsager’s reaction field may be incorporated in mean-field-like calculations for the...
It is shown how Onsager's reaction field may be incorporated in mean-field-like calculations for the...
It is shown how Onsager's reaction field may be incorporated in mean-field-like calculations for the...
[[abstract]]A spin model called the anisotropic exchange-interaction model is proposed. The Potts mo...
26 pages, 1 figureWe prove phase transition for the non-symmetric continuum Potts model with backgro...