Dynamical coupling between Ising and FK percolation

Raphaël Cerf (1) , Sana Louhichi (2)

1 LM-Orsay - Laboratoire de Mathématiques d'Orsay
2 IPS - Inférence Processus Stochastiques

We investigate the problem of constructing a dynamics on edge-spin configurations which realizes a coupling between a Glauber dynamics of the Ising model and a dynamical evolution of the percolation configurations. We dream of constructing a Markov process on edge-spin configurations which is reversible with respect to the Ising-FK coupling measure, and such that the marginal on the spins is a Glauber dynamics, while the marginal on the edges is a Markovian evolution. We present two local dynamics, one which fulfills only the first condition and one which fulfills the first two conditions. We show next that our dream process is not feasible in general. We present a third dynamics, which is non local and fulfills the first and the third conditions. We finally present a localized version of this third dynamics, which can be seen as a contraction of the first dynamics.

Mots clés: Ising model; FK percolation; Random-cluster process; Glauber dynamics; Coupling measure; Reversibility

Domaines: Probabilités [math.PR]; Physique mathématique [math-ph]

Raphaël Cerf, Sana Louhichi. Dynamical coupling between Ising and FK percolation. ALEA : Latin American Journal of Probability and Mathematical Statistics, 2020, 17 (1), pp.23-49. ⟨10.30757/ALEA.v17-02⟩. ⟨hal-01892118⟩