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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">mais</journal-id><journal-title-group><journal-title xml:lang="ru">Моделирование и анализ информационных систем</journal-title><trans-title-group xml:lang="en"><trans-title>Modeling and Analysis of Information Systems</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1818-1015</issn><issn pub-type="epub">2313-5417</issn><publisher><publisher-name>Yaroslavl State University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.18255/1818-1015-2013-3-5-28</article-id><article-id custom-type="elpub" pub-id-type="custom">mais-192</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>Оригинальные статьи</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Articles</subject></subj-group></article-categories><title-group><article-title>Параметрический резонанс в гармоническом осцилляторе с переменной частотой собственных колебаний</article-title><trans-title-group xml:lang="en"><trans-title>Parametric Resonance in a Time-Dependent Harmonic Oscillator</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Нестеров</surname><given-names>Павел Николаевич</given-names></name><name name-style="western" xml:lang="en"><surname>Nesterov</surname><given-names>P. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>канд. физ.-мат. наук, доцент,</p><p>150000 Россия, г. Ярославль, ул. Советская, 14</p></bio><bio xml:lang="en"><p>канд. физ.-мат. наук, доцент,</p><p>Sovetskaya str., 14, Yaroslavl, 150000, Russia</p></bio><email xlink:type="simple">mathematix@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Ярославский государственный университет им. П.Г. Демидова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>P.G. Demidov Yaroslavl State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2013</year></pub-date><pub-date pub-type="epub"><day>20</day><month>06</month><year>2013</year></pub-date><volume>20</volume><issue>3</issue><fpage>5</fpage><lpage>28</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Нестеров П.Н., 2013</copyright-statement><copyright-year>2013</copyright-year><copyright-holder xml:lang="ru">Нестеров П.Н.</copyright-holder><copyright-holder xml:lang="en">Nesterov P.N.</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://www.mais-journal.ru/jour/article/view/192">https://www.mais-journal.ru/jour/article/view/192</self-uri><abstract><p>В статье изучается явление возникновения новых резонансов в гармоническом осцилляторе с переменной частотой собственных колебаний под действием колебательно убывающей во времени силы. Рассматриваемое в работе уравнение принадлежит классу адиабатических осцилляторов. Подобного рода уравнения возникают в спектральных задачах для одномерного оператора Шредингера с потенциалом типа Вигнера–фон Неймана. Для исследования задачи в работе используется специальный метод асимптотического интегрирования систем линейных дифференциальных уравнений с колебательно убывающими коэффициентами. Метод основан на использовании идей метода усреднения для упрощения исходной системы. Затем для получения асимптотических формул применяется фундаментальная теорема Н. Левинсона. Далее в работе изучается феномен параметрического резонанса, возникающего в исследуемом уравнении. Найдены резонансные частоты внешнего возмущения и установлен точечный характер параметрического резонанса. В завершении работы строится пример гармонического осциллятора с переменной частотой собственных колебаний (адиабатического осциллятора), в котором могут воз- никать отмеченные в работе резонансы.</p></abstract><trans-abstract xml:lang="en"><p>In this paper, we study the phenomenon of appearance of new resonances in a timedependent harmonic oscillator under an oscillatory decreasing force. The studied equation belongs to the class of adiabatic oscillators and arises in connection with the spectral problem for the one-dimensional Schr¨odinger equation with Wigner–von Neumann type potential. We use a specially developed method for asymptotic integration of linear systems of differential equations with oscillatory decreasing coefficients. This method uses the ideas of the averaging method to simplify the initial system. Then we apply Levinson’s fundamental theorem to get the asymptotics for its solutions. Finally, we analyze the features of a parametric resonance phenomenon. The resonant frequencies of perturbation are found and the pointwise type of the parametric resonance phenomenon is established. In conclusion, we construct an example of a time-dependent harmonic oscillator (adiabatic oscillator) in which the parametric resonances, mentioned in the paper, may occur.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>гармонический осциллятор</kwd><kwd>переменная частота</kwd><kwd>резонанс</kwd><kwd>метод усреднения</kwd><kwd>асимптотика</kwd></kwd-group><kwd-group xml:lang="en"><kwd>harmonic oscillator</kwd><kwd>time-dependent frequency</kwd><kwd>resonance</kwd><kwd>method of averaging</kwd><kwd>asymptotics</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">РФФИ, грант Президента РФ</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Бурд В.Ш., Каракулин В.А. 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