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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">vestifm</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Национальной академии наук Беларуси. Серия физико-математических наук</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the National Academy of Sciences of Belarus. Physics and Mathematics Series</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-2430</issn><issn pub-type="epub">2524-2415</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">vestifm-263</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>ИНТЕРПРЕТАЦИЯ СВОБОДНОГО ДВИЖЕНИЯ ЧАСТИЦ В ПРОСТРАНСТВЕ ЛОБАЧЕВСКОГО В ТЕРМИНАХ ТЕОРИИ РАССЕЯНИЯ</article-title><trans-title-group xml:lang="en"><trans-title>INTERPRETATION OF THE FREE MOTION OF PARTICLES IN THE LOBACHEVSKY SPACE IN THE TERM OF THE SCATTERING THEORY</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>Курочкин</surname><given-names>Ю. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kurochkin</surname><given-names>Yu. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор физико-ма-тематических наук, заведующий центром «теоретическая физика» </p></bio><bio xml:lang="en"><p>D. Sc. (Physics and Mathematics), Head of the Center of Theoretical Physics</p></bio><email xlink:type="simple">yukuroch@dragon.bas-net.by</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт физики им. Б. И. Степанова Национальной академии наук Беларуси</institution></aff><aff xml:lang="en"><institution>B. I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2017</year></pub-date><pub-date pub-type="epub"><day>09</day><month>10</month><year>2017</year></pub-date><volume>0</volume><issue>3</issue><fpage>49</fpage><lpage>55</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Курочкин Ю.А., 2017</copyright-statement><copyright-year>2017</copyright-year><copyright-holder xml:lang="ru">Курочкин Ю.А.</copyright-holder><copyright-holder xml:lang="en">Kurochkin Y.A.</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://vestifm.belnauka.by/jour/article/view/263">https://vestifm.belnauka.by/jour/article/view/263</self-uri><abstract><p>Задачи о движении свободной частицы в трехмерном пространстве лобачевского интерпретируются как рассеяние пространством. Рассмотрены классический и квантово-механический случаи. Дана механическая интерпретация параллельных прямых пространства лобачевского как траекторий невзаимодействующих материальных точек, вылетевших из точки на бесконечности. В силу свойств параллельных прямых пространства лобачевского их можно рассматривать как траектории частиц, рассеянных на бесконечно удаленной точке. Введено понятие дифференциальных сечений рассеяния в элемент орисферы для классической и квантово-механической задач. Получено аналитическое выражение для дифференциального сечения в квантово-механической задаче. Для вывода данного выражения использовались решения уравнения Шредингера в орисферических координатах. Отмечается, что часть орисферы, секущая пучок параллельных траекторий, может рассматриваться как модель двумерной плоской вселенной в трехмерном пространстве с кривизной – пространстве лобачевского.</p><sec><title> </title><p> </p></sec><sec><title> </title><p> </p></sec></abstract><trans-abstract xml:lang="en"><p>The problems of the motion of free particles in the three-dimensional Lobachevsky space are interpreted as scattering by space. The classical and quantum-mechanical cases are considered. A mechanical interpretation of parallel straight lines of the Lobachevsky space is given as the trajectories of non-interacting material points emitted from a point at inﬁnity. Due to the properties of parallel lines in the Lobachevsky space, they can be considered as trajectories of particles scattered at an inﬁnitely distant point. The concept of differential scattering cross sections in the horosphere element for the classical and quantum-mechanical problems is introduced. An analytical expression for the differential cross section in the quantum-mechanical problem is obtained. To derive this expression, we used the solutions of the Schrödinger equation in horospherical coordinates. It is noted that some part of a horosphere is a secant beam of parallel trajectories, can be considered as a model of a two-dimensional ﬂat universe in the three-dimensional space with curvature – Lobachevsky space.</p><sec><title> </title><p> </p></sec><sec><title> </title><p> </p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>пространство лобачевского</kwd><kwd>параллельные прямые</kwd><kwd>траектории</kwd><kwd>орисфера</kwd><kwd>координаты</kwd><kwd>уравнение Шредингера</kwd><kwd>рассеяние</kwd><kwd>сечение рассеяния</kwd><kwd>модель вселенной</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Lobachevsky space</kwd><kwd>parallel lines</kwd><kwd>trajectories</kwd><kwd>horosphere</kwd><kwd>coordinates</kwd><kwd>Schrödinger equation</kwd><kwd>scattering</kwd><kwd>cross section</kwd><kwd>model of universe</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">Адамар, Ж. 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