caa a22 4500 467911290 CHVBK 20180406152850.0 cr unu---uuuuu 170328e20061101xx s 000 0 eng 10.1007/s11232-006-0133-2 doi (NATIONALLICENCE)springer-10.1007/s11232-006-0133-2 Eshkabilov Yu Uzbekistan National University, Tashkent, Uzbekistan aut A discrete "three-particle” Schrödinger operator in the Hubbard model [Elektronische Daten] [Yu. Eshkabilov] In the space L 2(T ν ×T ν ), where T ν is a ν-dimensional torus, we study the spectral properties of the "three-particle” discrete Schrödinger operator Ĥ = H0 + H1 + H2, where H0 is the operator of multiplication by a function and H1 and H2 are partial integral operators. We prove several theorems concerning the essential spectrum of Ĥ. We study the discrete and essential spectra of the Hamiltonians Ht and h arising in the Hubbard model on the three-dimensional lattice. Springer Science+Business Media, Inc., 2006 discrete Schrödinger operator nationallicence Hubbard model nationallicence discrete spectrum of a discrete operator nationallicence essential spectrum of a discrete operator nationallicence Theoretical and Mathematical Physics Kluwer Academic Publishers-Consultants Bureau 149/2(2006-11-01), 1497-1511 0040-5779 149:2<1497 2006 149 11232 https://doi.org/10.1007/s11232-006-0133-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11232-006-0133-2 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Eshkabilov Yu Uzbekistan National University, Tashkent, Uzbekistan aut NATIONALLICENCE 773 0- Theoretical and Mathematical Physics Kluwer Academic Publishers-Consultants Bureau 149/2(2006-11-01), 1497-1511 0040-5779 149:2<1497 2006 149 11232 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer