Low energy effects for a family of Friedrichs models

Sergio Albeverio, Saidakhmat N. Lakaev, Ramiza Kh. Djumanova

A family of Friedrichs models with rank one perturbations $h_{\mu }(p),$ $p\in (-\pi ,\pi {]}^3,\mu >0$ associated to a system of two particles on the lattice ${\mathbb{Z}}^3$ is considered. The existence…