<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE article PUBLIC "-//NLM//DTD JATS (Z39.96) Journal Publishing DTD v1.3 20210610//EN" "JATS-journalpublishing1-3.dtd">
<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 pub-id-type="doi">10.29235/1561-2430-2019-55-4-467-478</article-id><article-id custom-type="elpub" pub-id-type="custom">vestifm-483</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>Скалярная частица со структурой Дарвина – Кокса во внешнем кулоновском поле</article-title><trans-title-group xml:lang="en"><trans-title>Scalar particle with the Darwin – Cox intrinsic structure in the external Coulomb field</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>Войнова</surname><given-names>Я. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Voynova</surname><given-names>Ya. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Войнова Янина Александровна – аспирант.</p><p>пр. Независимости, 68­2, 220072, г. Минск</p></bio><bio xml:lang="en"><p>Voynova Yanina Alexandrovna – Postgraduate.</p><p>68­-2, Nezavisimosti Ave., 220072, Minsk</p></bio><email xlink:type="simple">voinyuschka@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>Коральков</surname><given-names>А. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Koralkov</surname><given-names>A. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Коральков Артем Дмитриевич – стажер младшего научного сотрудника.</p><p>ул. Студенческая, 28, 247760, г. Мозырь</p></bio><bio xml:lang="en"><p>Koralkov Artem Dmitrievich – Assistant Junior Researcher.</p><p>28, Studencheskaya Str., 247760, Mozyr</p></bio><email xlink:type="simple">artemkoralkov@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Овсиюк</surname><given-names>Е. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Оvsiyuk</surname><given-names>E. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Овсиюк Елена Михайловна – кандидат физико­ математических наук, доцент, заведующий кафедрой тео ретической физики и прикладной информатики.</p><p>ул. Студенческая, 28, 247760, г. Мозырь</p></bio><bio xml:lang="en"><p>Оvsiyuk Еlena Мikhailovna – Ph. D. (Physics and Mathematics), Assistant Professor, Head of the Department of Theoretical Physics and Applied Informatics.</p><p>28, Studencheskaya Str., 247760, Mozyr</p></bio><xref ref-type="aff" rid="aff-2"/></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, National Academy of Sciences of Belarus</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Мозырский государственный педагогический университет им. И. П. Шамякина</institution></aff><aff xml:lang="en"><institution>Mozyr State Pedagogical University named after I. P. Shamyakin</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>07</day><month>01</month><year>2020</year></pub-date><volume>55</volume><issue>4</issue><fpage>467</fpage><lpage>478</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Войнова Я.А., Коральков А.Д., Овсиюк Е.М., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Войнова Я.А., Коральков А.Д., Овсиюк Е.М.</copyright-holder><copyright-holder xml:lang="en">Voynova Y.A., Koralkov A.D., Оvsiyuk E.M.</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/483">https://vestifm.belnauka.by/jour/article/view/483</self-uri><abstract><p>Обобщенное уравнение Клейна – Фока – Гордона для частицы со структурой Дарвина – Кокса, учитывающее распределение заряда частицы по сфере конечного радиуса, исследуется с учетом внешнего кулоновского поля. Проведено разделение переменных, полученное радиальное уравнение сложнее уравнения в случае обычной частицы – оно имеет существенно особые точки r = 0 ранга 3, r = ∞ ранга 2 и 4 регулярные особые точки. В случае минимального орбитального момента l = 0 структура сингулярностей упрощается: есть существенно особые точки r = 0, r = ∞ ранга 2 и 4 регулярные особые точки. Построены решения Фробениуса этого уравнения, исследована структура рекуррентных соотношений для коэффициентов возникающего 7-членного степенного ряда. В качестве аналитического условия квантования используется обобщенное требование трансцендентности решений, которое позволяет получить алгебраическое уравнение 4-й степени для уровней энергии. Уравнение имеет 4 множества корней, зависящих от орбитального момента l и главного квантового числа k = 1,2,3,… . Численный анализ показывает, что одно из множеств корней 0 &lt; εl,k &lt; mc2 может интерпретироваться как отвечающее некоторым связанным состояниям частицы в кулоновском поле.</p></abstract><trans-abstract xml:lang="en"><p>The generalized Klein – Fock – Gordon equation for a particle with the Darwin–Cox structure allowing for a charge distribution of a particle over a sphere of finite radius is studied with regard to the external Coulomb field. The separation of variables is carried out, the obtained radial equation is significantly more complicated than the equation in the case of ordinary particles, it has essentially singular points r = 0 of rank 3, r = ∞ of rank 2 and 4 regular singular points. In the case of a minimum orbital momentum l = 0, the structure of singularities is simplified: there are essentially singular points r = 0, r = ∞ of rank 2 and 4 regular singular points. Frobenius solutions of this equation are constructed and the structure of the 7-term recurrence relations for the coefficients of the arising power series is investigated. As an analytical quantization condition, the generalized transcendence requirement of solutions is used; it allows one to obtain a fourth-degree algebraic equation for energy levels. The equation has 4 sets of roots depending on the orbital moment l and the main quantum number k = 1,2,3,… . The numerical analysis shows that one of the sets of the roots 0 &lt; εl,k &lt; mc2 can be interpreted as those corresponding to certain bound states of the particle in the Coulomb field.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>скалярная частица со структурой Дарвина – Кокса</kwd><kwd>кулоновское поле</kwd><kwd>уравнение Клейна – Фока – Гордона</kwd><kwd>существенно особые точки</kwd><kwd>решения Фробениуса</kwd><kwd>связанное состояние</kwd></kwd-group><kwd-group xml:lang="en"><kwd>scalar particle with the Darwin – Cox structure</kwd><kwd>Coulomb field</kwd><kwd>Klein – Fock – Gordon equation</kwd><kwd>essentially singular points</kwd><kwd>Frobenius solutions</kwd><kwd>bound state</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">Cox, W. Higher-rank representations for zero-spin field theories / W. Cox // J. Phys. Math. Gen. – 1982. – Vol. 15, № 2. – P. 627–635. https://doi.org/10.1088/0305-4470/15/2/029</mixed-citation><mixed-citation xml:lang="en">Cox W. Higher-rank representations for zero-spin field theories. Journal of Physics A: Mathematical and General, 1982, vol. 15, no. 2, pp. 627–635. https://doi.org/10.1088/0305-4470/15/2/029</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Ovsiyuk, E. M. Spin-zero Cox’s particle with an intrinsic structure: general analysis in external electromagnetic and gravitational fields / E. M. Ovsiyuk // Ukr. J. Phys. – 2015. – Vol. 60, № 6. – P. 485–496. https://doi.org/10.15407/ujpe60.06.0485</mixed-citation><mixed-citation xml:lang="en">Ovsiyuk E. M. Spin-zero Cox’s particle with an intrinsic structure: general analysis in external electromagnetic and gravitational fields. Ukrainian Journal of Physics, 2015, vol. 60, no. 6, pp. 485–496. https://doi.org/10.15407/ujpe60.06.0485</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Kazmerchuk, K. V. Cox’s particle in magnetic and electric field against the background of Euclidean and spherical geometries / K. V. Kazmerchuk, E. M. Ovsiyuk // Ukr. Phys. J. – 2015. – Vol. 60, № 5. – P. 389–400. https://doi.org/10.15407/ujpe60.05.0389</mixed-citation><mixed-citation xml:lang="en">Kazmerchuk K. V., Ovsiyuk E. M. Cox’s particle in magnetic and electric field against the background of Euclidean and spherical geometries. Ukrainian Journal of Physics, 2015, vol. 60, no. 5, pp. 389–400. https://doi.org/10.15407/ujpe60.05.0389</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Овсиюк, Е. М. Скалярная частица с внутренней структурой в электромагнитном поле в искривленном пространстве-времени / Е. М. Овсиюк, О. В. Веко, К. В. Казмерчук // Проблемы физики, математики и техники. – 2014. – № 3 (20). – С. 32–36.</mixed-citation><mixed-citation xml:lang="en">Ovsiyuk E. M., Veko O. V., Kazmerchuk K. V. Scalar particle with internal structure in the electromagnetic field in the curved space-time. Problemy fiziki, matematiki i tekhniki = Problems of Physics, Mathematics and Technics, 2014, no. 3 (20), pp. 32–36 (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Veko, O. V. Cox’s particle in magnetic and electric fields on the background of hyperbolic Lobachevsky geometry / O. V. Veko // Nonlinear Phenomena in Complex Systems. – 2016. – Vol. 19, № 1. – P. 50–61.</mixed-citation><mixed-citation xml:lang="en">Veko O. V. Cox’s particle in magnetic and electric fields on the background of hyperbolic Lobachevsky geometry. Nonlinear Phenomena in Complex Systems, 2016, vol. 19, no. 1, pp. 50–61.</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Частица Кокса во внешнем магнитном поле: анализ в пространстве Лобачевского / О. В. Веко [и др.] // Вес. Нац. акад. Навук Беларусi. Сер.фiз.-мат. навук. – 2017. – № 4. – C. 55–65.</mixed-citation><mixed-citation xml:lang="en">Veko O. V., VoynovaYa. A., Ovsiyuk E. M., Red’kov V. M.Nonrelativistic Cox particle with intrinsic structure in magnetic field, analysis in Lobachevsky space. Vestsі Natsyianal’nai akademіі navuk Belarusі. Seryia fіzіka-matematychnykh navuk = Proceedings of the National Academy of Sciences of Belarus. Physics and Mathematics series, 2017, no. 4, pp. 55–65 (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Elementary Particles with Internal Structure in External Fields. Vol 1.General Theory / V. V. Kisel [et al.]. − New York: Nova Science Publishers Inc., 2018. − 404 p.</mixed-citation><mixed-citation xml:lang="en">Kisel V. V., Ovsiyuk E. M., Balan V., Veko O. V., Red’kov V. M. Elementary Particles with Internal Structure in External Field. Vol. 1. General Formalism. USA, Nova Science Publishers, Inc., 2018. 404 p.</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Elementary Particles with Internal Structure in External Fields. Vol 2. Physical Problems / V. V. Kisel [et al]. − New York: Nova Science Publishers Inc., 2018. − 402 p.</mixed-citation><mixed-citation xml:lang="en">Kisel V. V., Ovsiyuk E. M., Balan V., Veko O. V., Red’kov V. M. Elementary Particles with Internal Structure in External Field.Vol. 2. Physical Problems. USA, Nova Science Publishers, Inc., 2018. 402 p.</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Heun, K. Zur Theorie der Riemann'schen Functionen zweiter Ordnung mit vier Verzweigungspunkten / K. Heun // Math. Ann. – 1989. – Bd. 33, № 2. – S. 161–179. https://doi.org/10.1007/bf01443849</mixed-citation><mixed-citation xml:lang="en">ZurTheorie der Riemann'schenFunctionenzweiterOrdnungmitvierVerzweigungspunkten. Mathematische Annalen, 1989, vol. 33, no. 2, pp. 161–179. https://doi.org/10.1007/bf01443849</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Ronveaux, A. Heun’s Differential Equation / A. Ronveaux. – Oxford: Oxford University Press, 1995. – 354 p.</mixed-citation><mixed-citation xml:lang="en">Ronveaux A. Heun’s Differential Equations. Oxford, Oxford University Press, 1995. 354 p.</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Slavyanov, S. Yu. Special Functions. A Unified Theory Based on Singularities / S. Yu. Slavyanov, W. Lay. – Oxford: Oxford University Press, 2000. – 312 p.</mixed-citation><mixed-citation xml:lang="en">Slavyanov S.Yu., Lay W. Special Functions. A Unified Theory Based on Singularities. Oxford, OxfordUniversityPress, 2000. 312 p.</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
