<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE root>
<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Physics of Atomic Nuclei</journal-id><journal-title-group><journal-title xml:lang="en">Physics of Atomic Nuclei</journal-title><trans-title-group xml:lang="ru"><trans-title>Ядерная физика</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0044-0027</issn><issn publication-format="electronic">3034-6282</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">696599</article-id><article-id pub-id-type="doi">10.31857/S0044002725040061</article-id><article-categories><subj-group subj-group-type="toc-heading"><subject>ЭЛЕМЕНТАРНЫЕ ЧАСТИЦЫ И ПОЛЯ. Теория</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Relativistic four-nucleon calculations with rank-one separable potential</article-title><trans-title-group xml:lang="ru"><trans-title>РЕЛЯТИВИСТСКИЕ РАСЧЕТЫ ДЛЯ ЧЕТЫРЕХНУКЛОННОЙ СИСТЕМЫ С СЕПАРАБЕЛЬНЫМ ПОТЕНЦИАЛОМ ПЕРВОГО РАНГА</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Bondarenko</surname><given-names>S.</given-names></name><name xml:lang="ru"><surname>Бондаренко</surname><given-names>С.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Yurev</surname><given-names>S.</given-names></name><name xml:lang="ru"><surname>Юрьев</surname><given-names>С.</given-names></name></name-alternatives><email>yurev@jinr.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">BLTP, Joint Institute for Nuclear Research</institution></aff><aff><institution xml:lang="ru">Лаборатория теоретической физики им. Н.Н. Боголюбова, Объединенный институт ядерных исследований</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-08-15" publication-format="electronic"><day>15</day><month>08</month><year>2025</year></pub-date><volume>88</volume><issue>4</issue><issue-title xml:lang="en">VOL 88, NO4 (2025)</issue-title><issue-title xml:lang="ru">ТОМ 88, №4 (2025)</issue-title><fpage>361</fpage><lpage>366</lpage><history><date date-type="received" iso-8601-date="2025-11-20"><day>20</day><month>11</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Russian Academy of Sciences</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Российская академия наук</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Russian Academy of Sciences</copyright-holder><copyright-holder xml:lang="ru">Российская академия наук</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/" start_date="2026-08-15"/></permissions><self-uri xlink:href="https://transsyst.ru/0044-0027/article/view/696599">https://transsyst.ru/0044-0027/article/view/696599</self-uri><abstract xml:lang="en"><p>A solution to the relativistic generalization of the four-particle integral Faddeev–Yakubovsky equation is carried out. Only states with zero orbital angular momentum, S states, are considered in the calculations. A rank-one separable potential for the nucleon–nucleon interaction is used to solve the two-nucleon Bethe–Salpeter equation. Calculations are carried out taking into account both the “3 + 1” and “2 + 2” subchannels in the equation. The system of integral equations is solved by the iteration method and the binding energy of the helium-4 nucleus is found. The calculated results are compared with experimental data and nonrelativistic calculations.</p></abstract><trans-abstract xml:lang="ru"><p>Проведено решение релятивистского обобщения четырехчастичного интегрального уравнения Фаддеева–Якубовского. В расчетах рассматриваются только состояния с нулевым орбитальным моментом, S-состояния. Для решения двухнуклонного уравнения Бете–Солпитера используется сепарабельный потенциал первого ранга для взаимодействия нуклонов. Расчеты проводятся с учетом как подканалов “3 + 1”, так и “2 + 2” в уравнении. Система интегральных уравнений решается методом итераций, и находится энергия связи ядра гелия-4. Результаты расчетов сравниваются с экспериментальными данными и нерелятивистскими расчетами.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>уравнения Фаддеева–Якубовского</kwd><kwd>ядро гелия-4</kwd><kwd>релятивистское исследование</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>L. D. Faddeev, JETP 39, 1459 (1960).</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>O. A. Yakubovsky, Sov. J. Nucl. Phys. 5, 937 (1967).</mixed-citation></ref><ref id="B3"><label>3.</label><mixed-citation>A. Stadler, F. Gross, and M. Frank, Phys. Rev. C 56, 2396 (1997).</mixed-citation></ref><ref id="B4"><label>4.</label><mixed-citation>H. Witała, J. Golak, R. Skibiński, W. Glöckle, H. Kamada, and W. N. Polyzou, Phys. Rev. C 83, 044001 (2011); Phys. Rev. C 88, 069904 (Erratum) (2013).</mixed-citation></ref><ref id="B5"><label>5.</label><mixed-citation>H. Kamada, SciPost Phys. Proc. 3, 003 (2020).</mixed-citation></ref><ref id="B6"><label>6.</label><mixed-citation>G. Rupp and J. A. Tjon, Phys. Rev. C 37, 1729 (1988).</mixed-citation></ref><ref id="B7"><label>7.</label><mixed-citation>M. R. Hadizadeh, M. Radin, and K. Mohseni, Sci. Rep. 10, 1949 (2020).</mixed-citation></ref><ref id="B8"><label>8.</label><mixed-citation>E. E. Salpeter and H. A. Bethe, Phys. Rev. 84, 1232 (1951).</mixed-citation></ref><ref id="B9"><label>9.</label><mixed-citation>S. Bondarenko, V. Burov, and S. Yurev, Nucl. Phys. A 1004, 122065 (2020); arXiv: 2010.15540.</mixed-citation></ref><ref id="B10"><label>10.</label><mixed-citation>S. Bondarenko, V. Burov, and S. Yurev, Nucl. Phys. A 1014, 122251 (2021); arXiv: 2102.06061.</mixed-citation></ref><ref id="B11"><label>11.</label><mixed-citation>S. Bondarenko and S. Yurev, Phys. At. Nucl. 87, 822 (2024).</mixed-citation></ref><ref id="B12"><label>12.</label><mixed-citation>V. F. Kharchenko, Phys. Part. Nucl. 10, 349 (1979).</mixed-citation></ref><ref id="B13"><label>13.</label><mixed-citation>B. F. Gibson and D. R. Lehman, Phys. Rev. C 14, 685 (1976); Phys. Rev. C 15, 2257 (Erratum) (1977).</mixed-citation></ref></ref-list></back></article>
