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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">dan</journal-id><journal-title-group><journal-title xml:lang="ru">Доклады Национальной академии наук Беларуси</journal-title><trans-title-group xml:lang="en"><trans-title>Doklady of the National Academy of Sciences of Belarus</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-8323</issn><issn pub-type="epub">2524-2431</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">dan-141</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>АНАЛИЗ РЕЛАКСАЦИИ ТРЕХУРОВНЕВОЙ СИСТЕМЫ ВНЕ РАМОК ПРИБЛИЖЕНИЯ ВРАЩАЮЩЕЙСЯ ВОЛНЫ</article-title><trans-title-group xml:lang="en"><trans-title>ANALYSIS OF A RELAXATION IN A THREE-LEVEL SYSTEM OUT OF FRAMEWORK OF THE ROTATING WAVE APPROXIMATION</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>ЭСКАНДЕРИ</surname><given-names>М.</given-names></name><name name-style="western" xml:lang="en"><surname>ESKANDARI</surname><given-names>M.</given-names></name></name-alternatives><email xlink:type="simple">cosmic.mahdi@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>ЛЕОНОВ</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>LEONOV</surname><given-names>A. V.</given-names></name></name-alternatives><email xlink:type="simple">leonov.bsu@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>ФЕРАНЧУК</surname><given-names>И. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>FERANCHUK</surname><given-names>I. D.</given-names></name></name-alternatives><email xlink:type="simple">iferanchuk@gmail.com</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 НАН Беларуси, Минск</institution></aff><aff xml:lang="en"><institution>B. I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus, Minsk</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Белорусский государственный университет, Минск</institution></aff><aff xml:lang="en"><institution>Belarusian State University, Minsk</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2015</year></pub-date><pub-date pub-type="epub"><day>06</day><month>06</month><year>2016</year></pub-date><volume>59</volume><issue>5</issue><fpage>44</fpage><lpage>50</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; ЭСКАНДЕРИ М., ЛЕОНОВ А.В., ФЕРАНЧУК И.Д., 2016</copyright-statement><copyright-year>2016</copyright-year><copyright-holder xml:lang="ru">ЭСКАНДЕРИ М., ЛЕОНОВ А.В., ФЕРАНЧУК И.Д.</copyright-holder><copyright-holder xml:lang="en">ESKANDARI M., LEONOV A.V., FERANCHUK I.D.</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://doklady.belnauka.by/jour/article/view/141">https://doklady.belnauka.by/jour/article/view/141</self-uri><abstract><p>В настоящей работе исследуются квазистационарные энергетические состояния трехуровневой системы в V-конфигурации, находящейся в управляющем резонансном поле. Целью исследования является определение условий, при которых возможно существенное влияние на вероятность спонтанного излучения в такой системе. Показано, что выход за рамки приближения вращающейся волны значительно изменяет спонтанные ширины линий.</p></abstract><trans-abstract xml:lang="en"><p>Quasi-stationary states of the V-configuration three-level system in a driving resonant field is considered in the present article. The main goal of the analysis is to define the conditions when the essential impact on spontaneous emission is possible in this system. It is shown that the spontaneous linewidths substantially change if they are calculated outside the framework of the rotating wave approximation.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>двухуровневая система</kwd><kwd>резонансное поле</kwd><kwd>квазистационарные уровни</kwd></kwd-group><kwd-group xml:lang="en"><kwd>two-level system</kwd><kwd>resonant field</kwd><kwd>quasi-stationary levels</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">Dynamically Controlled Resonance Fluorescence Spectra from a Doubly Dressed Single InGaAs Quantum Dot / Y. He [et al.] // Phys. Rev. Lett. – 2015. – Vol. 114. – Art. 097402. – P. 1–4.</mixed-citation><mixed-citation xml:lang="en">Dynamically Controlled Resonance Fluorescence Spectra from a Doubly Dressed Single InGaAs Quantum Dot / Y. He [et al.] // Phys. Rev. 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