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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">techusgu</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Юго-Западного государственного университета. Серия: Техника и технологии</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the Southwest State University. Series: Engineering and Technology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2223-1528</issn><publisher><publisher-name>Юго-Западный государственный университет</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21869/2223-1528-2022-12-1-208-218</article-id><article-id custom-type="elpub" pub-id-type="custom">techusgu-74</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ФИЗИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHYSICS</subject></subj-group></article-categories><title-group><article-title>Численное решение обратной задачи для уравнения Шредингера и разных порогов парциальных каналов</article-title><trans-title-group xml:lang="en"><trans-title>Inverse Problem Numerical Solution for Schrödinger Equation  and Different Thesholds of Partial Channels</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7735-5393</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Хохлов</surname><given-names>Н. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Khokhlov</surname><given-names>N. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Хохлов Николай Александрович, доктор физико-математических наук, заведующий  кафедрой высшей математики</p><p>ул. 50 лет Октября 94, г. Курск 305040</p></bio><bio xml:lang="en"><p>Nicolay A. Khokhlov, Dr. of Sci. (Physics and Mathematics), Head of Higher Mathematics Department</p><p>50 Let Oktyabrya str. 94, Kursk, 305040</p><p> </p></bio><email xlink:type="simple">nikolakhokhlov@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7735-5393</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кочура</surname><given-names>Е. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Kochura</surname><given-names>E. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кочура Евгения Павловна, кандидат  физико-математических наук, доцент кафедры программной инженерии</p><p>ул. 50 лет Октября 94, г. Курск 305040</p></bio><bio xml:lang="en"><p>Evgeniay P. Kochura, Cand. of Sci. (Physics  and Mathematics), Assocate Professor of  the Programm Engineering Department</p><p>50 Let Oktyabrya str. 94, Kursk, 305040</p></bio><email xlink:type="simple">ekochura@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Крамарь</surname><given-names>Е. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Kramar</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Крамарь Елена Ивановна, старший  преподаватель кафедры физики</p><p>ул. Тихоокеанская 136, г. Хабаровск 680035</p></bio><bio xml:lang="en"><p>Elena A. Kramar, Senior lecturer of Physics  Department</p><p>136 Tikhookeanskaya st., Khabarovsk 680035</p></bio><email xlink:type="simple">kramar@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4818-565X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Дрейзин</surname><given-names>В. Э.</given-names></name><name name-style="western" xml:lang="en"><surname>Dreyzin</surname><given-names>V. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Дрейзин Валерий Элезарович, доктор  технических наук, профессор</p><p>ул. 50 лет Октября 94, г. Курск 305040</p></bio><bio xml:lang="en"><p>Valery E. Dreyzin, Dr. of Sci. (Engineering), Professor</p><p>50 Let Oktyabrya str. 94, Kursk, 305040</p></bio><email xlink:type="simple">drejzin_ve@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Юго-Западный государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Southwest State University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Тихоокеанский государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Pacific National University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>28</day><month>04</month><year>2023</year></pub-date><volume>12</volume><issue>1</issue><fpage>208</fpage><lpage>218</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Хохлов Н.А., Кочура Е.П., Крамарь Е.И., Дрейзин В.Э., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Хохлов Н.А., Кочура Е.П., Крамарь Е.И., Дрейзин В.Э.</copyright-holder><copyright-holder xml:lang="en">Khokhlov N.A., Kochura E.P., Kramar E.A., Dreyzin V.E.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://techusgu.elpub.ru/jour/article/view/74">https://techusgu.elpub.ru/jour/article/view/74</self-uri><abstract><sec><title>Цель исследования</title><p>Цель исследования. Рассматривается проблема постановки и решения обратных задач для систем уравнений шредингеровского типа и связанная с такими задачами (в подходах Гельфанда – Левитана и Марченко) проблема решения систем интегральных уравнений Фредгольма второго рода. </p></sec><sec><title>Методы</title><p>Методы. На основе выполненного анализа представлена постановка обратной задачи теории квантового рассеяния для радиальных уравнений Шредингера, в подходе Марченко, при наличии нескольких связанных каналов с разными порогами (на примере двух каналов, с очевидным обобщением). Приведены конкретные свойства соответствующей S-матрицы рассеяния и асимптотик возможных связанных состояний, необходимые и достаточные для однозначного решения рассматриваемой в работе обратной задачи и ее физической адекватности. </p></sec><sec><title>Результаты</title><p>Результаты. Получена квазирациональная аппроксимация элементов S-матрицы (аппроксимация типа Паде) для обратной задачи теории рассеяния для системы двух уравнений шредингеровского типа с разными порогами, обладающая всеми необходимыми и достаточными для возможности решения свойствами в явном виде. Данная аппроксимация позволяет получить решение рассматриваемой обратной задачи (системы связанных уравнений Марченко – интегральных уравнений Фредгольма второго рода), в принципе, в аналитическом виде. Разработан алгоритм численного решения указанной обратной задачи.  </p></sec><sec><title>Заключение</title><p>Заключение. Обсуждаются возможные области применения предлагаемого в работе алгоритма и разработанного метода численного решения обратной задачи для уравнений (систем уравнений) шредингеровского типа и других подобных обратных задач. В работе получено аналитическое решение обратной задачи теории рассеяния для системы уравнений шредингеровского типа с разными порогами в случае S-матрицы специального вида. Подобранный специальный вид S-матрицы позволяет аппроксимировать (интерполировать) любые физически адекватные S-матрицы.  </p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Purpose of research</title><p>Purpose of research. We consider a problem of setting up and solution the inverse scattering problem for systems of Schrödinger equations. We consider a connected problem (in Gelfand–Levitanand- Marchenko approaches) of solution of systems of Fredholm integral equations of the second kind. </p></sec><sec><title>Methods</title><p>Methods. Based on the performed an analysis the setting up of the scattering theory inverse problem for radial Schrödinger equations is presented in Marchenko approach for case of a number of coupled channels with different thresholds (by the example of two channels with obvious generalization).  </p></sec><sec><title>Results</title><p>Results. Specific properties of the corresponding scattering S-matrix and asymptotics of possible bound states are obtained necessary and sufficient for explicit solution of the considered inverse scattering problem and its physical adequacy. A quasirational approximation of the S-matrix elements (Pade type approximant) for the scattering theory inverse problem for system of Schrödinger type equations is presented. The obtained approximation has explicitly all the necessary and sufficient properties for solution of the considered problem. The presented approximation allows to solve the considered inverse problem (system of coupled Marchenko equations – Fredholm integral equations of the second kind analytically, in principle.   </p></sec><sec><title>Conclusion</title><p>Conclusion. Possible areas of application of the presented algorithm and developed method of numerical solution of the inverse problem of equations (systems of equations) of Schrödinger type and other similar problems. Analytical solution of the scattering theory inverse problem for the system of Schrödinger type equations with different thresholds and for case of specific kind S-matrix. Designed specific kind of S-matrix allows to approximate (interpolate) any physically adequate S-matrices.  </p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>обратная задача</kwd><kwd>теория рассеяния</kwd><kwd>метод Марченко</kwd><kwd>система интегральных уравнений</kwd><kwd>аппроксимация Паде</kwd></kwd-group><kwd-group xml:lang="en"><kwd>inverse problem</kwd><kwd>scattering theory</kwd><kwd>Marchenko method</kwd><kwd>system of integral equations</kwd><kwd>Pade approximant</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Yaman F., Yakhno V.G., Potthast R. A Survey on inverse problems for applied sciences // Mathematical Problems in Engeneering. 2013. Vol. 2013. P. 976837.</mixed-citation><mixed-citation xml:lang="en">Yaman F., Yakhno V.G., Potthast R. A Survey on inverse problems for applied sciences. 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