Connection-probability conjecture for critical loop O(n)O(n) models

About 2 years old · traced to

Consider the loop O(n)O(n) model with n∈(0,2]n\in (0,2] and boundary condition β∈LPN\beta\in\mathrm{LP}_N. Let ςδ\varsigma^{\delta} be the random connectivity in LPN\mathrm{LP}_N induced by the NN discrete interfaces in Ωδ\Omega^{\delta}. In the critical dilute phase, p=pcp=p_c and κ∈(8/3,4]\kappa\in (8/3,4] solves the relation defining κ\kappa; in the critical dense phase, p>pcp>p_c and κ∈[4,8)\kappa\in [4,8) solves the same relation. Connection-probability conjecture. For every α∈LPN\alpha\in\mathrm{LP}_N, the conformally invariant limit is

lim⁡δ→0Pβδ[ςδ=α]=Mn(α,β) Zα(κ)(x˚1,…,x˚2N)Fβ(κ)(x˚1,…,x˚2N).\lim_{\delta\to 0}\mathbb{P}_{\beta}^{\delta}[\varsigma^{\delta}=\alpha]=\mathcal{M}_{n}(\alpha,\beta)\,\frac{\mathcal{Z}_{\alpha}^{(\kappa)}(\mathring{x}_1,\ldots,\mathring{x}_{2N})}{\mathcal{F}_{\beta}^{(\kappa)}(\mathring{x}_1,\ldots,\mathring{x}_{2N})}.

Here Mn\mathcal{M}_{n} is the meander matrix with parameter nn, Zα(κ)\mathcal{Z}_{\alpha}^{(\kappa)} is the pure partition function, Fβ(κ)\mathcal{F}_{\beta}^{(\kappa)} is the Coulomb gas integral, and x˚j=φ(xj)\mathring{x}_j=\varphi(x_j) under any conformal map φ ⁣:Ω→H\varphi\colon\Omega\to\mathbb{H}. This is the predicted connection-probability formula for multiple interfaces in critical loop O(n)O(n) models; the general convergence is conjectural, although special cases such as critical Ising interfaces are known.

References

Primary source

Yu Feng, Mingchang Liu, Eveliina Peltola and Hao Wu, “Multiple SLEs for κ(0,8): Coulomb gas integrals and pure partition functions”, arXiv:2406.06522 (2026).

Progress summary

Never refreshed

Nothing recorded yet. Refresh searches the literature and the public web for attempts on this problem, and writes the first summary here.

Solutions 0

No solutions have been posted yet.