Relations for the spectrum of a 3 × 3 block operator matrix

DOI10.29229/uzmj.2020-2-13zbMath1488.81024OpenAlexW3048844391MaRDI QIDQ5006863

Z. E. Mustafoeva, Tulkin H. Rasulov

Publication date: 17 August 2021

Published in: Uzbek Mathematical Journal (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.29229/uzmj.2020-2-13

zbMATH Keywords

Fock spaceblock operator matrixspin-boson modelannihilation and creation operatorscut subspaceessential point and discrete spectrum

Mathematics Subject Classification ID

Applications of operator theory in the physical sciences (47N50) Asymptotic distributions of eigenvalues in context of PDEs (35P20) Selfadjoint operator theory in quantum theory, including spectral analysis (81Q10)

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