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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">46739</article-id><article-id pub-id-type="doi">10.22363/2658-4670-2025-33-3-299-308</article-id><article-id pub-id-type="edn">HHVFRM</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Physics and Astronomy</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Физика</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">Dark matter hypothesis and new possibilities of the Skyrme-Faddeev chiral model</article-title><trans-title-group xml:lang="ru"><trans-title>Гипотеза о тёмной материи и новые возможности киральной модели Скирма-Фаддеева</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7744-9725</contrib-id><contrib-id contrib-id-type="scopus">16454766600</contrib-id><contrib-id contrib-id-type="researcherid">S-4813-2018</contrib-id><name-alternatives><name xml:lang="en"><surname>Rybakov</surname><given-names>Yuri P.</given-names></name><name xml:lang="ru"><surname>Рыбаков</surname><given-names>Ю. П.</given-names></name></name-alternatives><bio xml:lang="en"><p>Doctor of Physical and Mathematical Sciences, Professor of the Institute of Physical Research and Technologies</p></bio><email>rybakov-yup@rudn.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">RUDN University</institution></aff><aff><institution xml:lang="ru">Российский университет дружбы народов</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-10-15" publication-format="electronic"><day>15</day><month>10</month><year>2025</year></pub-date><volume>33</volume><issue>3</issue><issue-title xml:lang="en">VOL 33, NO3 (2025)</issue-title><issue-title xml:lang="ru">ТОМ 33, №3 (2025)</issue-title><fpage>299</fpage><lpage>308</lpage><history><date date-type="received" iso-8601-date="2025-10-28"><day>28</day><month>10</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Rybakov Y.P.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Рыбаков Ю.П.</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Rybakov Y.P.</copyright-holder><copyright-holder xml:lang="ru">Рыбаков Ю.П.</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/46739">https://journals.rudn.ru/miph/article/view/46739</self-uri><abstract xml:lang="en"><p>New possibilities of the 16-spinor realization of the Skyrme-Faddeev chiral model are discussed. Using gauge invariance principle, it is shown that there exist two independent ways for breaking the isotopic invariance symmetry. The first one concerns the interaction with the electromagnetic field (ordinary photons generated by the electric charge) and the second one includes the interaction with the new vector field (shadow/dark photons generated by the special neutrino charge). The neutrino oscillation phenomenon is explained.</p></abstract><trans-abstract xml:lang="ru"><p>Обсуждаются новые возможности 16-спинорной реализации киральной модели Скирма- Фаддеева. Используя принцип калибровочной инвариантности, показывается, что есть два независимых способа нарушения изотопической симметрии. Первый способ состоит в том, чтобы включить взаимодействие с электромагнитным полем (обыкновенными фотонами, порождаемыми электрическим зарядом), а второй опирается на взаимодействие с новым векторным полем (теневыми/тёмными фотонами, порождаемыми специальным нейтринным зарядом). Объясняется явление нейтринных осцилляций.</p></trans-abstract><kwd-group xml:lang="en"><kwd>chiral model</kwd><kwd>16-spinor field</kwd><kwd>shadow/dark photons</kwd><kwd>neutrino charge</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>киральная модель</kwd><kwd>16-спинорное поле</kwd><kwd>теневые/тёмные фотоны</kwd><kwd>нейтринный заряд</kwd></kwd-group><funding-group/></article-meta><fn-group/></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Skyrme, T. H. R. A unified field theory of mesons and baryons. Nucl. Phys. 31, 556-569. doi:10. 1016/0029-5582(62)90775-7 (1962).</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Faddeev, L. D. Gauge invariant model of electromagnetic and weak interactions of leptons. Rep. Acad. Sci. USSR 210, 807-810 (1973).</mixed-citation></ref><ref id="B3"><label>3.</label><mixed-citation>Rybakov, Y. P. Topological solitons in the Skyrme-Faddeev spinor model and quantum mechanics. Grav. 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