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

Consider the loop O(n)O(n) model with n(0,2]n\in (0,2] and boundary condition βLPN\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 αLPN\alpha\in\mathrm{LP}_N, the conformally invariant limit is

limδ0Pβδ[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 ⁣:ΩH\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.

Sources & referencesView supporting material

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.