Section
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Mathematics
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Title
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Asymptotics of the Schrödinger operator levels for a crystal film with a nonlocal potential
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Author(-s)
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Smetanina M.S.a
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Affiliations
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Udmurt State Universitya
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Abstract
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We consider a three-dimensional Schrödinger operator for a crystal film with a nonlocal potential, which is a sum of an operator of multiplication by a function, and an operator of rank two (“separable potential”) of the form $V=W (x) +\lambda _1(\cdot,\phi _1)\phi _1+\lambda _2(\cdot,\phi _2)\phi _2 $. Here the function $W(x)$ decreases exponentially in the variable $x_3$, the functions $\phi _1(x)$, $\phi _2(x)$ are linearly independent, of Bloch type in the variables $x_1,\,x_2$ and exponentially decreasing in the variable $x_3$. Potentials of this type appear in the pseudopotential theory. A level of the Schrödinger operator is its eigenvalue or resonance. The existence and uniqueness of the level of this operator near zero is proved, and its asymptotics is obtained.
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Keywords
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Schrödinger equation, nonlocal potential, eigenvalues, resonances, asymptotics
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UDC
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517.958, 530.145.61
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MSC
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35Q40, 35J10, 35P20
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DOI
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10.20537/vm180403
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Received
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30 August 2018
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Language
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Russian
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Citation
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Smetanina M.S. Asymptotics of the Schrödinger operator levels for a crystal film with a nonlocal potential, Vestnik Udmurtskogo Universiteta. Matematika. Mekhanika. Komp'yuternye Nauki, 2018, vol. 28, issue 4, pp. 462-473.
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References
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