Joint CLE scaling limit of FK interfaces on random planar maps

Establish that the loops separating primal and dual clusters in suitably renormalised self-dual FK(q)-weighted planar maps converge jointly with the map to an independent conformal loop ensemble with parameter kappa' = 16/gamma^2.

Background

In addition to the conjectured convergence of the underlying maps to a Liouville quantum gravity surface, the paper identifies a conjectural scaling limit for the interfaces separating primal and dual FK clusters. The proposed limit is an independent CLE with parameter determined by the LQG parameter.

The paper cites peanosphere-topology convergence and several exponent calculations as supporting evidence, but does not prove the asserted joint convergence of the map and loop ensemble. This remains an explicitly stated conjectural problem.

References

In addition, the loops separating primal and dual clusters of $\Omega$ are conjectured to converge jointly with the map to an independent Conformal Loop Ensemble (CLE) with parameter $\kappa' = 16/\gamma2$.

Critical behaviour of the fully packed loop-$O(n)$ model on planar triangulations  (2512.05867 - Berestycki et al., 5 Dec 2025) in Section 1, Introduction