On the spectrum of an operator in truncated Fock space

DOI10.1007/978-3-319-68849-7_12zbMath1402.81151arXiv1612.05459OpenAlexW2565967148MaRDI QIDQ1626074

Orif O. Ibrogimov, Christiane Tretter

Publication date: 26 November 2018

Full work available at URL: https://arxiv.org/abs/1612.05459

zbMATH Keywords

Schur complementessential spectrumdiscrete spectrumWeyl inequalityFock spaceBirman-Schwinger principlespin-boson modeloperator matrixsingular sequence

Mathematics Subject Classification ID

Nuclear physics (81V35) General topics in linear spectral theory for PDEs (35P05) Applications of operator theory in the physical sciences (47N50) Selfadjoint operator theory in quantum theory, including spectral analysis (81Q10) Integral operators (47G10) Quantum scattering theory (81U99)

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