Geodesic
About the spectral properties of one three-partial model operator
Izvestiâ vysših učebnyh zavedenij. Matematika, no. 5 (2020), pp. 3-10 Cet article a éte moissonné depuis la source Math-Net.Ru

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We investigate the structure of the essential spectrum of one of the three particle model operator $H$. We prove the existence of a negative eigenvalues of the operator H and obtaine the estimate for a number of negative eigenvalues of the operator $H$.
Keywords: essential spectrum, discrete spectrum, lower bound of the essential spectrum, three particle discrete operator. 
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G. P. Arzikulov; Yu. Kh. Eshkabilov. About the spectral properties of one three-partial model operator. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 5 (2020), pp. 3-10. http://geodesic.mathdoc.fr/item/IVM_2020_5_a0/

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