On the structure of the essential spectrum of the three-particle Schrödinger operators on a lattice

Sergio Albeverio, Saidakhmat N. Lakaev, Zakhriddin I. Muminov

A system of three quantum particles on the three-dimensional lattice ${\mathbb{Z}}^3$ with arbitrary "dispersion functions" having non-compact support and interacting via short-range pair po…