On the essential and discrete spectrum of a model operator related to three-particle discrete Schrödinger operators

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

A model operator $H$ corresponding to a three-particle discrete Schrödinger operator on a lattice ${\mathbb{Z}}^3$ is studied. The essential spectrum is described via the spectrum of two Fri…