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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">cheb</journal-id><journal-title-group><journal-title xml:lang="ru">Чебышевский сборник</journal-title><trans-title-group xml:lang="en"><trans-title>Chebyshevskii Sbornik</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2226-8383</issn><publisher><publisher-name>Tula State Lev Tolstoy  Pedagogical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.22405/2226-8383-2025-26-4-475-486</article-id><article-id custom-type="elpub" pub-id-type="custom">cheb-2108</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>История математики и приложений</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Сomputer science</subject></subj-group></article-categories><title-group><article-title>Фазы квазиклассических решений двумерного безмассового уравнения Дирака в постоянном электромагнитном поле</article-title><trans-title-group xml:lang="en"><trans-title>Phases of semiclassical solutions of the two-dimensional massless Dirac equation with a constant electromagnetic 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>Акпан</surname><given-names>Динмухаммед Жулдызбайулы</given-names></name><name name-style="western" xml:lang="en"><surname>Akpan</surname><given-names>Dinmukhammed Zhuldyzbayuly</given-names></name></name-alternatives><email xlink:type="simple">dimashakpan010101@gmail.com</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>Богаевский</surname><given-names>Илья Александрович</given-names></name><name name-style="western" xml:lang="en"><surname>Bogaevskii</surname><given-names>Ilya Aleksandrovich</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор физико-математических наук</p></bio><bio xml:lang="en"><p>doctor of physical and mathematical sciences</p></bio><email xlink:type="simple">ibogaevsk@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>Зиатдинов</surname><given-names>Наиль Равильевич</given-names></name><name name-style="western" xml:lang="en"><surname>Ziatdinov</surname><given-names>Nail Ravilevich</given-names></name></name-alternatives><email xlink:type="simple">nail.ziatdinov@math.msu.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ошемков</surname><given-names>Андрей Александрович</given-names></name><name name-style="western" xml:lang="en"><surname>Oshemkov</surname><given-names>Andrey Aleksandrovich</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор физико-математических наук, профессор</p></bio><bio xml:lang="en"><p>doctor of physical and mathematical sciences, professor</p></bio><email xlink:type="simple">a@oshemkov.ru</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Московский государственный университет&#13;
им. М. В. Ломоносова; Институт Математики и Математического Мо-&#13;
делирования</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Lomonosov Moscow State University; Institute of Mathematics and Mathematical Modeling</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Гуандун Технион – Израильский Технологический Институт; НИИ системных исследований РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Guangdong Technion-Israel Institute of Technology; Scientific Research Institute of System Analysis</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Московский государственный университет им. М. В. Ломоносова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Lomonosov Moscow State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>29</day><month>12</month><year>2025</year></pub-date><volume>26</volume><issue>4</issue><fpage>475</fpage><lpage>486</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Акпан Д.Ж., Богаевский И.А., Зиатдинов Н.Р., Ошемков А.А., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Акпан Д.Ж., Богаевский И.А., Зиатдинов Н.Р., Ошемков А.А.</copyright-holder><copyright-holder xml:lang="en">Akpan D.Z., Bogaevskii I.A., Ziatdinov N.R., Oshemkov A.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://www.chebsbornik.ru/jour/article/view/2108">https://www.chebsbornik.ru/jour/article/view/2108</self-uri><abstract><p>Изучены графики фаз квазиклассических асимптотик решений двумерного безмассового уравнения Дирака с локализованным начальном условием в постоянном (не зависящим ни от точки, ни от времени) электромагнитном поле. Рассматриваемое уравнение описывает распространение квазичастиц (электронов и дырок) в графене, при этом электрическая компонента поля параллельна плоскости графена, а магнитная — перпендикулярна ей. Получены формулы для фаз при всех значениях компонент электромагнитного поля.</p></abstract><trans-abstract xml:lang="en"><p>The phase graphs of semiclassical asymptotics of solutions to the two-dimensional massless Dirac equation with a localized initial condition in a constant (independent of position and time)electromagnetic field have been studied. The considered equation describes the propagation of quasiparticles (electrons and holes) in graphene, with the electric component of the field parallel to the graphene plane and the magnetic component perpendicular to it. Formulas for the phases have been obtained for all values of the electromagnetic field components.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>безмассовое уравнение Дирака</kwd><kwd>квазиклассическая асимптотика</kwd><kwd>графен</kwd><kwd>квазичастицы</kwd><kwd>лежандровы подмногообразия.</kwd></kwd-group><kwd-group xml:lang="en"><kwd>massless Dirac equation</kwd><kwd>semiclassical asymptotics</kwd><kwd>graphene</kwd><kwd>quasiparticles</kwd><kwd>Legendrian submanifolds.</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Поддержано Программой развития МГУ, проект № 23-Ш05-25.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Bogaevskii I. A. Sub-Lorentzian structures in R4: left-invariance and conformal normal forms// Journal of Dynamical and Control Systems. 2018. Vol. 24, no. 3. 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