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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">phmath</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник Государственного университета просвещения. Серия: Физика-Математика</journal-title><trans-title-group xml:lang="en"><trans-title>Bulletin of Federal State University of Education. Series: Physics and Mathematics</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2949-5083</issn><issn pub-type="epub">2949-5067</issn><publisher><publisher-name>Federal State University of Education</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.18384/2310-7251-2018-4-84-91</article-id><article-id custom-type="elpub" pub-id-type="custom">phmath-543</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>РАЗДЕЛ I. ФИЗИКА</subject></subj-group></article-categories><title-group><article-title>АКТИВНЫЙ РЕЖИМ ЛИОТРОПНЫХ НЕМАТИКОВ И КАЛИБРОВОЧНОЕ ПОЛЕ ДЕФЕКТОВ</article-title><trans-title-group xml:lang="en"><trans-title>AN ACTIVE STATE IN LYOTROPIC NEMATICS AND THE GAUGE FIELD OF THEIR DEFECTS</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>Ельникова</surname><given-names>Лилия Вячеславовна</given-names></name><name name-style="western" xml:lang="en"><surname>Elnikova</surname><given-names>Liliia V.</given-names></name></name-alternatives><email xlink:type="simple">elnikova@itep.ru</email><xref ref-type="aff" rid="aff-1"/></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>A.I. Alikhanov Institute for Theoretical and Experimental Physics, National Research Centre “Kurchatov Institute”</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2018</year></pub-date><pub-date pub-type="epub"><day>20</day><month>01</month><year>2023</year></pub-date><volume>0</volume><issue>4</issue><fpage>84</fpage><lpage>91</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ельникова Л.В., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Ельникова Л.В.</copyright-holder><copyright-holder xml:lang="en">Elnikova L.V.</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.physmathmgou.ru/jour/article/view/543">https://www.physmathmgou.ru/jour/article/view/543</self-uri><abstract><p>В свете калибровочной полевой теории на решетке обсуждаются лиотропные нематические жидкие кристаллы, проявляющие самоорганизованное течение, так называемые активные нематики. Эволюция топологических дефектов в таких системах взаимосвязана с этим потоком. Тип фазового перехода «нематик-изотропная» фаза в активных нематиках может быть отличен от такового в системах без активности.</p></abstract><trans-abstract xml:lang="en"><p>Lyotropic nematic liquid crystals (NLCs) exhibiting a self-organizing flow (so called ‘active nematics’) are discussed within the framework of the lattice gauge field theory. The evolution of topological defects in such systems is mutually caused by the flow regime. It is shown that the ‘nematic-isotropic’ phase transition in active NLCs may differ from that in conventional NLCs.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>активные нематики</kwd><kwd>жидкие кристаллы</kwd><kwd>теория упругости</kwd><kwd>топологические дефекты</kwd><kwd>дифференциальные формы на решетке</kwd><kwd>метод Монте-Карло</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Green R., Toner J., Vitelli V. Geometry of thresholdless active flow in nematic microfluidics // Physical Review Fluids. 2017. Vol. 2. Iss. 10. P. 104201-1-104201-31.</mixed-citation><mixed-citation xml:lang="en">Green R., Toner J., Vitelli V. Geometry of thresholdless active flow in nematic microfluidics // Physical Review Fluids. 2017. Vol. 2. Iss. 10. P. 104201-1-104201-31.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Де Жен. П. Физика жидких кристаллов. М.: Мир, 1977. 400 с.</mixed-citation><mixed-citation xml:lang="en">Де Жен. П. Физика жидких кристаллов. М.: Мир, 1977. 400 с.</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Кадич А., Эделен Д. Калибровочная теория дислокаций и дисклинаций. М.: Мир, 1987. 166 c.</mixed-citation><mixed-citation xml:lang="en">Кадич А., Эделен Д. Калибровочная теория дислокаций и дисклинаций. М.: Мир, 1987. 166 c.</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Ландау Л.Д., Лифшиц Е.М. Теоретическая физика. Т. VI. Гидродинамика. М.: Физматлит, 2001. 736 с.</mixed-citation><mixed-citation xml:lang="en">Ландау Л.Д., Лифшиц Е.М. Теоретическая физика. Т. VI. Гидродинамика. М.: Физматлит, 2001. 736 с.</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Lavrentovich O.D. Active colloids in liquid crystals // Current Opinion in Colloid &amp; Interface Science. 2016. Vol. 21. P. 97-110.</mixed-citation><mixed-citation xml:lang="en">Lavrentovich O.D. Active colloids in liquid crystals // Current Opinion in Colloid &amp; Interface Science. 2016. Vol. 21. P. 97-110.</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Leslie F.M. Some constitutive equations for anisotropic fluids // The Quarterly Journal of Mechanics and Applied Mathematics. 1966. Vol. 19. Iss. 3. P. 357-370.</mixed-citation><mixed-citation xml:lang="en">Leslie F.M. Some constitutive equations for anisotropic fluids // The Quarterly Journal of Mechanics and Applied Mathematics. 1966. Vol. 19. Iss. 3. P. 357-370.</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Maier W., Saupe A. Eine einfache molekulare Theorie des nematischen kristallinflьssigen Zustandes // Zeitschrift fьr Naturforschung. 1958. Vol. 13a. P. 564-566.</mixed-citation><mixed-citation xml:lang="en">Maier W., Saupe A. Eine einfache molekulare Theorie des nematischen kristallinflьssigen Zustandes // Zeitschrift fьr Naturforschung. 1958. Vol. 13a. P. 564-566.</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Maier W., Saupe A. Eine einfache molekular-statistische Theorie der nematischen kristallinflьssigen Phase. Teil I // Zeitschrift fьr Naturforschung. 1959. Vol. 14a. P. 882-900.</mixed-citation><mixed-citation xml:lang="en">Maier W., Saupe A. Eine einfache molekular-statistische Theorie der nematischen kristallinflьssigen Phase. Teil I // Zeitschrift fьr Naturforschung. 1959. Vol. 14a. P. 882-900.</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Maier W., Saupe A. Eine einfache molekular-statistische Theorie der nematischen kristallinflьssigen Phase. Teil II // Zeitschrift fьr Naturforschung. 1960. Vol. 15a. P. 287-292.</mixed-citation><mixed-citation xml:lang="en">Maier W., Saupe A. Eine einfache molekular-statistische Theorie der nematischen kristallinflьssigen Phase. Teil II // Zeitschrift fьr Naturforschung. 1960. Vol. 15a. P. 287-292.</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Hydrodynamics of soft active matter / Marchetti M.C., Joanny J.F., Ramaswamy S., Liverpool T.B., Prost J., Rao Madan, Aditi Simha R. // Reviews of Modern Physics. 2013. Vol. 85. Iss. 3. P. 1143-1189.</mixed-citation><mixed-citation xml:lang="en">Hydrodynamics of soft active matter / Marchetti M.C., Joanny J.F., Ramaswamy S., Liverpool T.B., Prost J., Rao Madan, Aditi Simha R. // Reviews of Modern Physics. 2013. Vol. 85. Iss. 3. P. 1143-1189.</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Osipov V.A. A Monopole-like solution for static disclinations in continuum media // Physics Letters A. 1990. Vol. 146. Iss. 1-2. P. 67-70.</mixed-citation><mixed-citation xml:lang="en">Osipov V.A. A Monopole-like solution for static disclinations in continuum media // Physics Letters A. 1990. Vol. 146. Iss. 1-2. P. 67-70.</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Поликарпов М.И. Фракталы, топологические дефекты и невылетание в решеточных калибровочных теориях // Успехи физических наук. 1995. Т. 165. Вып. 6. С. 627-644.</mixed-citation><mixed-citation xml:lang="en">Поликарпов М.И. Фракталы, топологические дефекты и невылетание в решеточных калибровочных теориях // Успехи физических наук. 1995. Т. 165. Вып. 6. С. 627-644.</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Ryskin G., Kremenetsky M. Drag force on a line defect moving through an otherwise undisturbed field: Disclination Line in a Nematic Liquid Crystal // Physical Review Letters. 1991. Vol. 67. Iss. 12. P. 1574-1577.</mixed-citation><mixed-citation xml:lang="en">Ryskin G., Kremenetsky M. Drag force on a line defect moving through an otherwise undisturbed field: Disclination Line in a Nematic Liquid Crystal // Physical Review Letters. 1991. Vol. 67. Iss. 12. P. 1574-1577.</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Sengupta A. Topological microfluidics: Nematic liquid crystals and nematic colloids in microfluidic environment. Switzerland: Springer International Publishing, 2013. 165 p.</mixed-citation><mixed-citation xml:lang="en">Sengupta A. Topological microfluidics: Nematic liquid crystals and nematic colloids in microfluidic environment. Switzerland: Springer International Publishing, 2013. 165 p.</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Skačej G., Zannoni C. Biaxial liquid-crystal elastomers: A lattice model // The European Physical Journal E. 2008. Vol. 25. No. 2. P. 181-186.</mixed-citation><mixed-citation xml:lang="en">Skačej G., Zannoni C. Biaxial liquid-crystal elastomers: A lattice model // The European Physical Journal E. 2008. Vol. 25. No. 2. P. 181-186.</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Toner J., Tu Y. Long-Range Order in a Two-Dimensional Dynamical XY Model: How Birds Fly Together // Physical Review Letters. 1995. Vol. 75. Iss. 23. P. 4326-4329.</mixed-citation><mixed-citation xml:lang="en">Toner J., Tu Y. Long-Range Order in a Two-Dimensional Dynamical XY Model: How Birds Fly Together // Physical Review Letters. 1995. Vol. 75. Iss. 23. P. 4326-4329.</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Novel type of phase transition in a system of self-driven particles / Vicsek T., Czirok A., Ben-Jacob E., Cohen I., Shochet O. // Physical Review Letters. 1995. Vol. 75. Iss. 6. P. 1226-1229.</mixed-citation><mixed-citation xml:lang="en">Novel type of phase transition in a system of self-driven particles / Vicsek T., Czirok A., Ben-Jacob E., Cohen I., Shochet O. // Physical Review Letters. 1995. Vol. 75. Iss. 6. P. 1226-1229.</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Yang C.N., Mills R. Conservation of Isotopic Spin and Isotopic Gauge Invariance // Physical Review. 1954. Vol. 96. Iss. 1. P. 191-195.</mixed-citation><mixed-citation xml:lang="en">Yang C.N., Mills R. Conservation of Isotopic Spin and Isotopic Gauge Invariance // Physical Review. 1954. Vol. 96. Iss. 1. P. 191-195.</mixed-citation></citation-alternatives></ref><ref id="cit19"><label>19</label><citation-alternatives><mixed-citation xml:lang="ru">Zakharov A.V., Vakulenko A.A. Dynamics of the modulated distortions in confined nematic liquid crystals // The Journal of Chemical Physics. 2013. Vol. 139. Iss. 24. P. 244904-1-244904-6.</mixed-citation><mixed-citation xml:lang="en">Zakharov A.V., Vakulenko A.A. Dynamics of the modulated distortions in confined nematic liquid crystals // The Journal of Chemical Physics. 2013. Vol. 139. Iss. 24. P. 244904-1-244904-6.</mixed-citation></citation-alternatives></ref><ref id="cit20"><label>20</label><citation-alternatives><mixed-citation xml:lang="ru">Living liquid crystals / Zhou S., Sokolov A., Lavrentovich O.D., Aranson I.S. // Proceedings of the National Academy of Sciences. 2014. Vol. 111. Iss. 4. P. 1265-1270.</mixed-citation><mixed-citation xml:lang="en">Living liquid crystals / Zhou S., Sokolov A., Lavrentovich O.D., Aranson I.S. // Proceedings of the National Academy of Sciences. 2014. Vol. 111. Iss. 4. P. 1265-1270.</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
