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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">npe</journal-id><journal-title-group><journal-title xml:lang="ru">Ядерная физика и инжиниринг</journal-title><trans-title-group xml:lang="en"><trans-title>Nuclear Physics and Engineering</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2079-5629</issn><issn pub-type="epub">2079-5637</issn><publisher><publisher-name>МИФИ</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.1134/S2079562920040077</article-id><article-id custom-type="elpub" pub-id-type="custom">npe-63</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>Математическое моделирование в ядерных технологиях</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Mathematical Modeling in Nuclear Technologies</subject></subj-group></article-categories><title-group><article-title>Фазовая диаграмма квантовой хромодинамики в пространстве температура–барионная плотность–магнитное поле</article-title><trans-title-group xml:lang="en"><trans-title>Phase Diagram of Quantum Chromodynamics in the Temperature–Baryon Density–Magnetic Field Parameter Space</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>Котов</surname><given-names>А. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Kotov</surname><given-names>A. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>117218; Б. Черемушкинская ул. 25; Москва</p></bio><bio xml:lang="en"><p>117218; B. Cheremushkinskaya st. 25; Moscow</p></bio><email xlink:type="simple">kotov@itep.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>Николаев</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Nikolaev</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кафедра физики</p><p>117218; Б. Черемушкинская ул. 25; Москва; Великобритания; Суонси SA2 8PP</p></bio><bio xml:lang="en"><p>Department of Physics</p><p>117218; B. Cheremushkinskaya st. 25; Moscow; United Kingdom; Swansea SA2 8PP </p></bio><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт теоретической и экспериментальной физики имени А.И. Алиханова Национального исследовательского центра “Курчатовский институт”</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Alikhanov Institute for Theoretical and Experimental Physics, National Research Center “Kurchatov Institute”</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Институт теоретической и экспериментальной физики имени А.И. Алиханова Национального исследовательского центра “Курчатовский институт”; Колледж науки Университета Суонси</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Alikhanov Institute for Theoretical and Experimental Physics, National Research Center “Kurchatov Institute”; Department of Physics, College of Science, Swansea University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>22</day><month>04</month><year>2024</year></pub-date><volume>11</volume><issue>4</issue><fpage>212</fpage><lpage>215</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Котов А.Ю., Николаев А.А., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Котов А.Ю., Николаев А.А.</copyright-holder><copyright-holder xml:lang="en">Kotov A.Y., Nikolaev 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://npe.elpub.ru/jour/article/view/63">https://npe.elpub.ru/jour/article/view/63</self-uri><abstract><p>   В данной статье изучается фазовая диаграмма Квантовой Хромодинамики при таких внешних параметрах, как температура, барионный химический потенциал и магнитное поле с помощью метода решеточного суперкомпьютерного моделирования. Вычисления проводятся с тремя легкими кварками при мнимом химическом потенциале. Для действительных значений химического потенциала результаты получены методом аналитического продолжения. С помощью перенормированного кирального конденсата и петли Полякова были определены положение (критическая температура) и ширина фазовых переходов конфайнмент-деконфайнмент и нарушение-восстановление киральной симметрии в зависимости от магнитного поля и барионной плотности.</p></abstract><trans-abstract xml:lang="en"><p>   The phase diagram of quantum chromodynamics under different external parameters, such as temperature, baryon density, and magnetic field strength is investigated by means of lattice simulations. Calculations are perfomed with three light quarks and imaginary chemical potential. For real values of chemical potential , the results are obtained by means of analytical continuation. Using renormalised chiral condensate and Polyakov loop, we determine the position (critical temperature) and width of the confinement−deconfinement and chiral symmetry breaking−restoration phase transitions as functions of magnetic field and baryon density.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>квантовая хромодинамика</kwd><kwd>фазовая диаграмма</kwd><kwd>решеточное Монте Карло моделирование</kwd><kwd>магнитное поле</kwd><kwd>барионная плотность</kwd></kwd-group><kwd-group xml:lang="en"><kwd>quantum chromodynamics</kwd><kwd>phase diagram</kwd><kwd>lattice Monte Carlo modelling</kwd><kwd>magnetic field</kwd><kwd>baryon density</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа А. Ю. Котова, состоящая в генерации конфигураций и измерении киральных наблюдаемых, выполнена за счет гранта Российского научного фонда (проект No 18-72-00055). Работа А. А. Николаева, состоящая в изучении свойств перехода конфайнмент деконфайнмент, поддержана РФФИ (грант 18-02- 40126 мега), а также грантом STFC ST/P00055X/1. Работа была выполнена с использованием оборудования центра коллективного пользования “Комплекс моделирования и обработки данных исследовательских установок мегакласса” НИЦ “Курчатовский институт”, http://ckp.nrcki.ru/</funding-statement><funding-statement xml:lang="en">Work by A.Yu. Kotov, which consists of generating configurations and measurements of chiral observables, was carried out with a grant from the Russian Science Foundation (project No. 18-72-00055). Work by A. A. Nikolaev, which consists of studying the properties of the confinement-transition deconfinement, supported by the Russian Foundation for Basic Research (grant 18-02- 40126 mega), as well as STFC grant ST/P00055X/1. The work was performed using equipment center for collective use “Complex fashion-linging and processing research data mega-class installations” National Research Center “Kurchatov Institute”, http://ckp.nrcki.ru/</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">Heinz U.W., Jacob M. // arXiv:nucl-th/0002042. 2000.</mixed-citation><mixed-citation xml:lang="en">Heinz U.W., Jacob M. // arXiv:nucl-th/0002042. 2000.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Gyulassy M., McLerran L. // Nucl. Phys. A. 2005. V. 750. P. 30.</mixed-citation><mixed-citation xml:lang="en">Gyulassy M., McLerran L. // Nucl. Phys. A. 2005. V. 750. 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