Asymptotics of even-even correlations in the Ising model

Sébastien Ott, Yvan Velenik

We consider finite-range ferromagnetic Ising models on ${\mathbb{Z}}^d$ in the regime $\beta <{\beta }_c$. We analyze the behavior of the prefactor to the exponential decay of $\mathrm{Cov}(σ_A,…