Clusters of resonances for a non-selfadjoint multichannel discrete Schrödinger operator

Marouane Assal, Olivier Bourget, Pablo Miranda +1

We study the distribution of resonances for discrete Hamiltonians of the form $H_0+V$ near the thresholds of the spectrum of $H_0$. Here, the unperturbed operator $H_0$ is a multic…