Distinct-domination-sets conjecture for fuzzy Potts phases

Let J>0J>0, q3q\geq 3, and r1,,q1r\in \\{1,\dots,q-1\\}. Consider the fuzzy Potts model on the torus Td\mathbb{T}^d, and let γp\gamma_p be Bernoulli product measure of density pp. Define

D+=p[0,1]:νq,J,rZd,+γp,D_+=\\{p\in[0,1]:\nu_{q,J,r}^{\mathbb{Z}^d,+}\geq\gamma_p\\}, D=p[0,1]:νq,J,rZd,γp,D_-=\\{p\in[0,1]:\nu_{q,J,r}^{\mathbb{Z}^d,-}\geq\gamma_p\\}, D0=p[0,1]:νq,J,rZd,0γp.D_0=\\{p\in[0,1]:\nu_{q,J,r}^{\mathbb{Z}^d,0}\geq\gamma_p\\}.

Here πq,JTd,1\pi_{q,J}^{\mathbb{T}^d,1} and πq,JTd,0\pi_{q,J}^{\mathbb{T}^d,0} are the corresponding Potts Gibbs measures with the indicated boundary conditions. Distinct-domination-sets conjecture. If πq,JTd,1πq,JTd,0\pi_{q,J}^{\mathbb{T}^d,1}\neq\pi_{q,J}^{\mathbb{T}^d,0}, then D+D_+, DD_-, and D0D_0 are pairwise different. The conjecture links phase non-uniqueness in the Potts model to distinct stochastic-domination profiles of the fuzzy phases. The source presents this as an open conjecture and does not provide a proof or disproof.

Sources & referencesView supporting material

Primary source

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

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