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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">vestifm</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Национальной академии наук Беларуси. Серия физико-математических наук</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the National Academy of Sciences of Belarus. Physics and Mathematics Series</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-2430</issn><issn pub-type="epub">2524-2415</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">vestifm-286</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>ФИЗИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHYSICS</subject></subj-group></article-categories><title-group><article-title>ВЗАИМОДЕЙСТВУЮЩЕЕ СКАЛЯРНОЕ ПОЛЕ В ТЕОРИИ ГРАВИТАЦИИ</article-title><trans-title-group xml:lang="en"><trans-title>INTERACTING SCALAR FIELD IN THE THEORY OF GRAVITY</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>Выблый</surname><given-names>Ю. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Vyblyi</surname><given-names>Yu. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат физико-математических наук, ведущий научный сотрудник</p><p>лаборатория теоретической физики</p><p>пр. Независимости, 68, 220072, г. Минск</p></bio><bio xml:lang="en"><p>Ph. D. (Physics and Mathematics), Leading Researcher of the Theoretical Physics Laboratory</p><p>68, Nezavisimosti Ave., 220072, Minsk</p></bio><email xlink:type="simple">vyblyi@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>Леонович</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Leonovich</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат физико-математических наук, доцент</p><p>кафедра физики</p><p>ул. П. Бровки, 6, 220013, г. Минск</p></bio><bio xml:lang="en"><p>Ph. D. (Physics and Mathematics), Assistant Professor of the Department of Physics</p><p>6, P. Brovka Str., 220013, Minsk</p></bio><email xlink:type="simple">kaffiz@bsuir.by</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт физики им. Б. И. Степанова Национальной академии наук Беларуси</institution></aff><aff xml:lang="en"><institution>B. I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Белорусский государственный университет информатики и радиоэлектроники</institution></aff><aff xml:lang="en"><institution>Belarusian State University of Informatics and Radioelectronics</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2017</year></pub-date><pub-date pub-type="epub"><day>23</day><month>01</month><year>2018</year></pub-date><volume>0</volume><issue>4</issue><fpage>98</fpage><lpage>103</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Выблый Ю.П., Леонович А.А., 2018</copyright-statement><copyright-year>2018</copyright-year><copyright-holder xml:lang="ru">Выблый Ю.П., Леонович А.А.</copyright-holder><copyright-holder xml:lang="en">Vyblyi Y.P., Leonovich 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://vestifm.belnauka.by/jour/article/view/286">https://vestifm.belnauka.by/jour/article/view/286</self-uri><abstract><p>В рамках скалярно-тензорной теории гравитации рассмотрено скалярное поле, источником которого является след собственного тензора энергии-импульса и след тензора энергии-импульса материи. Потенциал, входящий в лагранжиан скалярного поля, зависит от трех параметров: константы скалярного взаимодействия, массы скалярного поля и константы, определяющей минимум энергии поля. Рассмотрено представление скалярно-тензорной теории на фоне пространства Минковского с линейной связью метрики и тензорного гравитационного потенциала и получены дополнительные к полевым уравнениям условия, имеющие смысл ограничения тензорного поля по спиновым состояниям. Для космологической задачи показано, что в соответствии с наблюдениями дополнительные условия приводят к пространственно-плоской Вселенной. Получены численные решения полевых уравнений, на основе которых показано, что космологические параметры модели хорошо описывают современные наблюдательные данные и, таким образом, рассматриваемое скалярное поле может моделировать темную энергию. Проведено исследование областей изменения параметров космологического решения и сопоставление космологического скалярно-тензорного решения с ΛCDM – моделью общей теории относительности. Выполнен анализ возможных сценариев космологической эволюции в зависимости от параметров модели. </p></abstract><trans-abstract xml:lang="en"><p>In the framework of the scalar-tensor theory of gravitation, a scalar field is considered, whose source is the trace of own energy-momentum tensor and the trace of the energy-momentum tensor of matter. The potential that enters the Lagrangian of a scalar field depends on three parameters: scalar interaction constant, scalar field mass, and constant that determines the minimum of the field energy. The representation of the scalar-tensor theory on the Minkowski background with a linear connection between the metric and the tensor gravitational potential is considered, and the additional conditions for field equations are obtained that restriction a tensor field over its spin states. For a cosmological problem, it is shown that additional conditions lead to a spatially flat universe according to observations. Numerical solutions of field equations are obtained and on their basis it is shown that the cosmological parameters of the model well describe modern observational data and the scalar field under consideration can then successfully simulate dark energy. The area of variation of parameters of the cosmological solution was studied and a cosmological scalar-tensor solution was compared with the ΛCDM-model of General Relativity. Depending on the model parameters for cosmological evolution, possible scenarios are analyzed. </p></trans-abstract><kwd-group xml:lang="ru"><kwd>гравитационное взаимодействие</kwd><kwd>уравнения Эйнштейна</kwd><kwd>скалярное поле</kwd><kwd>космология</kwd><kwd>космологические параметры</kwd><kwd>темная энергия</kwd></kwd-group><kwd-group xml:lang="en"><kwd>gravitational interaction</kwd><kwd>Einstein equations</kwd><kwd>scalar field</kwd><kwd>cosmology</kwd><kwd>cosmological parameters</kwd><kwd>dark energy</kwd></kwd-group><funding-group><funding-statement xml:lang="en">This work was supported by the Belarusian Republican Foundation for Fundamental Research (Project No. F16-044).  The authors would like to thank I. G. Dudko for doing the calculations.</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">Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Comstant / A. G. Riess [et al.] // Astron. J. – 1998. – Vol. 116, № 3. – P. 1009–1012.</mixed-citation><mixed-citation xml:lang="en">Riess A. G., Filippenko A. V., Challis P., Clocchiatti A, Diercks A., Garnavich P. M., Gilliland R. L., Hogan C. J., Jha S., Kirshner R. P. Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Comstant. Astronomy Journal, 1998, vol. 116, no. 3, pp. 1009–1012. Doi: 10.1086/300499</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Measurement of Ω and Λ from 42 High-redshift Supernovae / S. Perlmutter [et al.] // Astroph. 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