Two point eigenvalue correlation for a class of non-selfadjoint operators under random perturbations

We consider a non-selfadjoint $h$-differential model operator $P_h$ in the semiclassical limit ($h\to 0$) subject to random perturbations with a small coupling constant $\delta$. Assume that $\exp(-\frac{1}{Ch}) < \delta \ll h^{\kappa}$forconstants$C,\kappa>0$suitablylarge\mathrm{.}Let$\Sigma$ be the closure of the range of the principal symbol. We study the $2$-point intensity measure of the random point process of eigenvalues of the randomly perturbed operator $P_h^{\delta }$ and prove an $h$-asymptotic formula for the average $2$-point density of eigenvalues. With this we show that two eigenvalues of $P_h^{\delta }$ in the interior of $\mathrm{\Sigma }$ exhibit close range repulsion and long range decoupling.