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Teoreticheskaya i Matematicheskaya Fizika, 2008, Volume 155, Number 2, Pages 287–300
DOI: https://doi.org/10.4213/tmf6211
(Mi tmf6211)
 

This article is cited in 7 scientific papers (total in 7 papers)

Spectrum of the two-particle Schrödinger operator on a lattice

S. N. Lakaeva, A. M. Khalkhuzhaevb

a A. Navoi Samarkand State University
b Institute of Study of Regional Problems, Uzbekistan Academy of Sciences, Samarkand Branch
Full-text PDF (450 kB) Citations (7)
References:
Abstract: We consider the family of two-particle discrete Schrödinger operators $H(k)$ associated with the Hamiltonian of a system of two fermions on a $\nu$-dimensional lattice $\mathbb Z^{\nu}$, $\nu\geq 1$, where $k\in\mathbb T^{\nu}\equiv(-\pi,\pi]^{\nu}$ is a two-particle quasimomentum. We prove that the operator $H(k)$, $k\in\mathbb T^{\nu}$, $k\ne0$, has an eigenvalue to the left of the essential spectrum for any dimension $\nu=1,2,\dots$ if the operator $H(0)$ has a virtual level ($\nu=1,2$) or an eigenvalue ($\nu\geq 3$) at the bottom of the essential spectrum (of the two-particle continuum).
Keywords: spectral properties, two-particle discrete Schrödinger operator, Birman–Schwinger principle, virtual level, eigenvalue.
Received: 20.12.2005
Revised: 24.07.2007
English version:
Theoretical and Mathematical Physics, 2008, Volume 155, Issue 2, Pages 754–765
DOI: https://doi.org/10.1007/s11232-008-0064-1
Bibliographic databases:
Language: Russian
Citation: S. N. Lakaev, A. M. Khalkhuzhaev, “Spectrum of the two-particle Schrödinger operator on a lattice”, TMF, 155:2 (2008), 287–300; Theoret. and Math. Phys., 155:2 (2008), 754–765
Citation in format AMSBIB
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\paper Spectrum of the~two-particle Schr\"odinger operator on a~lattice
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  • https://doi.org/10.4213/tmf6211
  • https://www.mathnet.ru/eng/tmf/v155/i2/p287
  • This publication is cited in the following 7 articles:
    Citing articles in Google Scholar: Russian citations, English citations
    Related articles in Google Scholar: Russian articles, English articles
    Теоретическая и математическая физика Theoretical and Mathematical Physics
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    Abstract page:540
    Full-text PDF :278
    References:95
    First page:4
     
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