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Chebyshevskii Sbornik, 2023, Volume 24, Issue 1, Pages 50–68
DOI: https://doi.org/10.22405/2226-8383-2023-24-1-50-68
(Mi cheb1282)
 

This article is cited in 2 scientific papers (total in 2 papers)

Regularized asymptotics of the solution of a singularly perturbed mixed problem on the semiaxis for an equation of Schrodinger type in the presence of a strong turning point for the limit operator

A. G. Eliseev, P. V. Kirichenko

National Research University “Moscow Power Engineering Institute” (Moscow)
Full-text PDF (686 kB) Citations (2)
References:
Abstract: In the proposed work we construct a regularized asymptotics for the solution of a singularly perturbed inhomogeneous mixed problem on the half-axis arising from a semiclassical transition in the Schrodinger equation in the coordinate representation. The potential energy profile chosen in the paper leads to a singularity in the spectrum of the limit operator in the form strong the turning point. Based on the ideas of asymptotic integration of problems with an unstable spectrum by S.A. Lomov and A.G. Eliseev, it is indicated how and from what considerations regularizing functions and additional regularizing operators should be introduced, the formalism of the regularization method for the problem posed is described in detail, and justification of this algorithm and an asymptotic solution of any order with respect to a small parameter is constructed.
Keywords: singularly perturbed problem, asymptotic solution, regularization method, turning point.
Funding agency Grant number
Ministry of Science and Higher Education of the Russian Federation FSWF-2023-0012
Received: 13.12.2022
Accepted: 24.04.2023
Document Type: Article
UDC: 517.955.8
Language: Russian
Citation: A. G. Eliseev, P. V. Kirichenko, “Regularized asymptotics of the solution of a singularly perturbed mixed problem on the semiaxis for an equation of Schrodinger type in the presence of a strong turning point for the limit operator”, Chebyshevskii Sb., 24:1 (2023), 50–68
Citation in format AMSBIB
\Bibitem{EliKir23}
\by A.~G.~Eliseev, P.~V.~Kirichenko
\paper Regularized asymptotics of the solution of a singularly perturbed mixed problem on the semiaxis for an equation of Schrodinger type in the presence of a strong turning point for the limit operator
\jour Chebyshevskii Sb.
\yr 2023
\vol 24
\issue 1
\pages 50--68
\mathnet{http://mi.mathnet.ru/cheb1282}
\crossref{https://doi.org/10.22405/2226-8383-2023-24-1-50-68}
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  • https://www.mathnet.ru/eng/cheb/v24/i1/p50
  • This publication is cited in the following 2 articles:
    Citing articles in Google Scholar: Russian citations, English citations
    Related articles in Google Scholar: Russian articles, English articles
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    Full-text PDF :24
    References:5
     
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