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<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">Discrete and Continuous Models and Applied Computational Science</journal-id><journal-title-group><journal-title xml:lang="en">Discrete and Continuous Models and Applied Computational Science</journal-title><trans-title-group xml:lang="ru"><trans-title>Discrete and Continuous Models and Applied Computational Science</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2658-4670</issn><issn publication-format="electronic">2658-7149</issn><publisher><publisher-name xml:lang="en">Peoples' Friendship University of Russia named after Patrice Lumumba (RUDN University)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">40104</article-id><article-id pub-id-type="doi">10.22363/2658-4670-2024-32-1-106-111</article-id><article-id pub-id-type="edn">CBNJTD</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</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">Numerical study of the ф4 standing waves in a ball of finite radius</article-title><trans-title-group xml:lang="ru"><trans-title>Численное исследование стоячих волн модели ф4 в шаре конечного радиуса</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8149-9533</contrib-id><contrib-id contrib-id-type="scopus">6701729810</contrib-id><name-alternatives><name xml:lang="en"><surname>Zemlyanaya</surname><given-names>Elena V.</given-names></name><name xml:lang="ru"><surname>Земляная</surname><given-names>Е. В.</given-names></name></name-alternatives><bio xml:lang="en"><p>Doctor of Physical and Mathematical Sciences, head of sector</p></bio><email>elena@jinr.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4356-8336</contrib-id><name-alternatives><name xml:lang="en"><surname>Bogolubskaya</surname><given-names>Alla A.</given-names></name><name xml:lang="ru"><surname>Боголюбская</surname><given-names>А. А.</given-names></name></name-alternatives><bio xml:lang="en"><p>Candidate of Physical and Mathematical Sciences, Senior Researcher</p></bio><email>abogol@jinr.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2706-8668</contrib-id><name-alternatives><name xml:lang="en"><surname>Bashashin</surname><given-names>Maxim V.</given-names></name><name xml:lang="ru"><surname>Башашин</surname><given-names>М. В.</given-names></name></name-alternatives><bio xml:lang="en"><p>Junior Researcher</p></bio><email>bashashinmv@jinr.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9068-6023</contrib-id><name-alternatives><name xml:lang="en"><surname>Alexeeva</surname><given-names>Nora V.</given-names></name><name xml:lang="ru"><surname>Алексеева</surname><given-names>Н. В.</given-names></name></name-alternatives><bio xml:lang="en"><p>Professor</p></bio><email>nora.alexeeva@uct.ac.za</email><xref ref-type="aff" rid="aff3"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Joint Institute for Nuclear Research</institution></aff><aff><institution xml:lang="ru">Объединенный институт ядерных исследований</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Dubna State University</institution></aff><aff><institution xml:lang="ru">Государственный университет Дубна</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">University of Cape Town</institution></aff><aff><institution xml:lang="ru">Кейптаунский университет</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2024-06-30" publication-format="electronic"><day>30</day><month>06</month><year>2024</year></pub-date><volume>32</volume><issue>1</issue><issue-title xml:lang="en">VOL 32, NO1 (2024)</issue-title><issue-title xml:lang="ru">ТОМ 32, №1 (2024)</issue-title><fpage>106</fpage><lpage>111</lpage><history><date date-type="received" iso-8601-date="2024-07-19"><day>19</day><month>07</month><year>2024</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2024, Zemlyanaya E.V., Bogolubskaya A.A., Bashashin M.V., Alexeeva N.V.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2024, Земляная Е.В., Боголюбская А.А., Башашин М.В., Алексеева Н.В.</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="en">Zemlyanaya E.V., Bogolubskaya A.A., Bashashin M.V., Alexeeva N.V.</copyright-holder><copyright-holder xml:lang="ru">Земляная Е.В., Боголюбская А.А., Башашин М.В., Алексеева Н.В.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by-nc/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://journals.rudn.ru/miph/article/view/40104">https://journals.rudn.ru/miph/article/view/40104</self-uri><abstract xml:lang="en"><p>Study of spherically symmetric time-periodic standing waves of the <span class="math">\( \varphi^4 \)</span> model in a ball of finite radius was carried out based on the numerical solution of a boundary value problem on a cylindrical surface for a wide range of values of the oscillation period. The standing waves in a ball of finite radius can be considered as an approximation of weakly radiating spherically symmetric oscillons in the  <span class="math">\( \varphi^4 \)</span>  model. Stability analysis the waves obtained is based on the calculation of the corresponding Floquet multipliers. In the paper, mathematical formulation of the problem is given, the numerical approach is described, including the method of parallel implementation of the calculation of Floquet multipliers on the computing resources of the HybriLIT platform of the Multifunctional Information and Computing Complex of the Joint Institute for Nuclear Research (Dubna). The results of the study of the space-time structure and bifurcation of coexisting standing waves of various types are presented.</p></abstract><trans-abstract xml:lang="ru"><p>Проведено численное исследование сферически симметричных периодических по времени стоячих волн модели <span class="math">\( \varphi^4 \)</span> в шаре конечного радиуса на основе вычисления решений сформулированной нелинейной краевой задачи на цилиндрической поверхности в широком диапазоне значений периода осцилляций и последующего анализа устойчивости полученных таким образом решений путем расчета соответствующих множителей Флоке. При этом стоячие волны в шаре конечного радиуса могут рассматриваться как аппроксимацияя слабоизлучающих сферически-симметричных осциллонов в модели <span class="math">\( \varphi^4 \)</span> . В работе описывается математическая постановка задачи и метод ее численного решения, обсуждается метод параллельной реализации расчета множителей Флоке на вычислительных ресурсах платформы HybriLIT Многофункционального информационно-вычислительного комплекса Объединенного института ядерных исследований (Дубна). Представлены результаты по исследованию пространственно-временной структуры и бифуркации сосуществующих стоячих волн различного типа.</p></trans-abstract><kwd-group xml:lang="en"><kwd>oscillons</kwd><kwd>numerical study</kwd><kwd>parallel computing</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>ocциллоны</kwd><kwd>компьютерное моделирование</kwd><kwd>параллельные вычисления</kwd></kwd-group><funding-group><funding-statement xml:lang="en">We thank the HybriLIT team for their help in organization of computations with the HybriLIT and Govorun resources.</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Voronov, N. A., Kobzarev, I. Y. &amp; Konyukhova, N. B. Possibility of the existence of X mesons of a new type. Russian. JETP Letters 22, 590-594 (1975).</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Bogolyubskii, I. &amp; Makhankov, V. 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