Monotonicity conjecture for fuzzy Potts plus states beyond criticality

Let q3q\geq 3, r1,,q1r\in \\{1,\dots,q-1\\}, and consider the fuzzy Potts model on the torus Td\mathbb{T}^d. Denote by JcJ_c the critical value corresponding to non-uniqueness of Gibbs states for the Potts model. Monotonicity conjecture beyond criticality. If Jc<J1<J2J_c<J_1<J_2, then

νq,J1,rTd,+νq,J2,rTd,+.\nu_{q,J_1,r}^{\mathbb{T}^d,+}\leq\nu_{q,J_2,r}^{\mathbb{T}^d,+}.

This conjecture asserts stochastic monotonicity of the plus fuzzy Potts measures in the non-uniqueness regime above the critical interaction. The source gives no evidence of a resolution, so the claim remains open.

Sources & referencesView supporting material

Primary source

Marcus Warfheimer, “Stochastic domination for the Ising and fuzzy Potts models”, arXiv:1003.3722 (2010).

Additional references

2 papers in this index state this conjecture (2001–2010). The statement above is taken from the most recent of them; the others are arXiv:math/0107033.

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