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  <front>
    <journal-meta>
      <journal-id journal-id-type="publisher-id">journal</journal-id>

      <journal-title-group>
        <journal-title>Вестник Объединенного института высоких температур</journal-title>
        <abbrev-journal-title abbrev-type="publisher">Вестник ОИВТ РАН</abbrev-journal-title>
      </journal-title-group>

      <issn pub-type="epub">2658-669X</issn>

      <publisher>
        <publisher-name>ОИВТ РАН</publisher-name>
      </publisher>
    </journal-meta>

    <article-meta>
      <article-id pub-id-type="publisher-id">145</article-id>
      <article-id pub-id-type="doi"></article-id>

      <title-group>
        <article-title>Проблема несоответствия вириального и термодинамического методов расчета давления однокомпонентной плазмы при использовании периодических граничных условий</article-title>
        <trans-title-group xml:lang="en">
          <trans-title>
            The problem of inconsistency between virial and thermodynamic methods for calculating pressure of one-component plasma with periodic boundary conditions
          </trans-title>
        </trans-title-group>
      </title-group>

      <contrib-group>
        <contrib contrib-type="author">
          <name-alternatives>
            <name xml:lang="ru">
              <surname>Онегин</surname>
              <given-names>Александр Сергеевич</given-names>
            </name>
            <name xml:lang="en">
              <surname>A.</surname>
              <given-names>S.</given-names>
            </name>
          </name-alternatives>
          <xref ref-type="aff" rid="id1">ОИВТ РАН</xref>
        </contrib>

        <contrib contrib-type="author">
          <name-alternatives>
            <name xml:lang="ru">
              <surname>Демьянов</surname>
              <given-names>Георгий Сергеевич</given-names>
            </name>
            <name xml:lang="en">
              <surname>G.</surname>
              <given-names>S.</given-names>
            </name>
          </name-alternatives>
          <xref ref-type="aff" rid="id2">ОИВТ РАН</xref>
        </contrib>

        <contrib contrib-type="author">
          <name-alternatives>
            <name xml:lang="ru">
              <surname>Левашов</surname>
              <given-names>Павел Ремирович</given-names>
            </name>
            <name xml:lang="en">
              <surname>P.</surname>
              <given-names>R.</given-names>
            </name>
          </name-alternatives>
          <xref ref-type="aff" rid="id3">ОИВТ РАН</xref>
        </contrib>

      </contrib-group>

      <aff-alternatives id="id1">
        <aff xml:lang="ru">
          <label>ОИВТ РАН</label>
          <institution>Объединенный институт высоких температур РАН (Москва, Россия)</institution>
          <addr-line>Москва, Россия</addr-line>
        </aff>
        <aff xml:lang="en">
          <label>JIHT RAS</label>
          <institution>Joint Institute for High Temperatures of the Russian Academy of Sciences (Moscow, Russia)</institution>
          <addr-line>Moscow, Russia</addr-line>
        </aff>
      </aff-alternatives>

      <aff-alternatives id="id2">
        <aff xml:lang="ru">
          <label>ОИВТ РАН</label>
          <institution>Объединенный институт высоких температур РАН (Москва, Россия)</institution>
          <addr-line>Москва, Россия</addr-line>
        </aff>
        <aff xml:lang="en">
          <label>JIHT RAS</label>
          <institution>Joint Institute for High Temperatures of the Russian Academy of Sciences (Moscow, Russia)</institution>
          <addr-line>Moscow, Russia</addr-line>
        </aff>
      </aff-alternatives>

      <aff-alternatives id="id3">
        <aff xml:lang="ru">
          <label>ОИВТ РАН</label>
          <institution>Объединенный институт высоких температур РАН (Москва, Россия)</institution>
          <addr-line>Москва, Россия</addr-line>
        </aff>
        <aff xml:lang="en">
          <label>JIHT RAS</label>
          <institution>Joint Institute for High Temperatures of the Russian Academy of Sciences (Moscow, Russia)</institution>
          <addr-line>Moscow, Russia</addr-line>
        </aff>
      </aff-alternatives>

      <pub-date publication-format="electronic" date-type="pub" pub-type="epub" iso-8601-date="2024-01-23">
        <day>23</day>
        <month>01</month>
        <year>2024</year>
      </pub-date>

      <volume>9</volume>
      <issue>7</issue>
      <fpage>40</fpage>
      <lpage>45</lpage>

      <abstract xml:lang="ru">
        <p>В данной работе мы рассматриваем два способа расчета давления однокомпонентной плазмы. Первый метод основан на дифференцировании свободной энергии по объему. Второй метод использует связь вириала системы с давлением, позволяя рассчитать вириальное давление. Эти методы дают одинаковый результат в случае, когда частицы в моделировании взаимодействуют по закону Кулона. Однако часто в моделировании плазмы используется потенциал Эвальда, который учитывает дальнодействующие эффекты в плазме. При учете этих эффектов наблюдаются значительные отличия между методами расчета давления. Более того, стремление к термодинамическому пределу вириального давления не наблюдается. Такое поведение связано с явной зависимостью потенциала Эвальда от размера расчетной ячейки, что не учитывается в вириальном давлении при вычислении градиента потенциала.</p>
      </abstract>

      <abstract xml:lang="en" abstract-type="summary">
        <p>In this paper, we investigate two methods for calculating the pressure of a one-component plasma. The first method is based on the differentiation of the free energy with respect to the volume. The second method uses the virial pressure, which relates the virial to the pressure of the system, allowing the calculation of the virial pressure. These methods yield identical results when the particles in the simulation interact with the Coulomb potential. However, plasma simulations often use the Ewald potential, which accounts for long-range interaction effects. Significant differences between pressure calculation methods are observed once these effects are taken into account. Furthermore, there is no convergence for the virial pressure to the thermodynamic limit. This behavior is related to the explicit dependence of the Ewald potential on the size of the computational cell, which is not taken into account in the virial pressure in calculating the potential gradient.</p>
      </abstract>

      <kwd-group kwd-group-type="author-keywords" xml:lang="ru">
        <kwd>однокомпонентная плазма</kwd>
        <kwd>давление</kwd>
        <kwd>потенциал Эвальда</kwd>
        <kwd>вириал</kwd>
        <kwd>термодинамика</kwd>
        <kwd>периодические граничные условия</kwd>
      </kwd-group>

      <kwd-group kwd-group-type="author-keywords" xml:lang="en">
        <kwd>one-component plasma</kwd>
        <kwd>pressure</kwd>
        <kwd>Ewald potential</kwd>
        <kwd>virial</kwd>
        <kwd>thermodynamics</kwd>
        <kwd>periodic boundary conditions</kwd>
      </kwd-group>

    </article-meta>
  </front>
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