3 papers
math-ph2020
Analysis of the spectrum of a operator matrix. Discrete spectrum asymptotics
Tulkin H. Rasulov, Elyor B. Dilmurodov
We consider a operator matrix related with the lattice systems describing two identical bosons and one particle, another nature in interactions…
math-ph2019
Threshold analysis for a family of operator matrices
Tulkin H. Rasulov, Elyor B. Dilmurodov
We consider a family of operator matrices , acting in the direct sum of zero- and one-particle subspaces of a…
math-ph2019
Eigenvalues and virtual levels of a family of operator matrices
Tulkin H. Rasulov, Elyor B. Dilmurodov
In the present paper we consider a family of operator matrices associated with the Hamiltonian of a system c…