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<!DOCTYPE article PUBLIC "-//NLM//DTD JATS (Z39.96) Journal Publishing DTD v1.3 20210610//EN" "https://jats.nlm.nih.gov/publishing/1.3/JATS-journalpublishing1-3.dtd">
<article article-type="meeting-report" dtd-version="1.3" xml:lang="ru">
  <front>
    <journal-meta>
      <journal-title-group>
        <journal-title>St. Petersburg Polytechnic University Journal: Physics and Mathematics</journal-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Научно-технические ведомости СПбГПУ. Физико-математические науки</trans-title>
        </trans-title-group>
      </journal-title-group>
      <issn pub-type="epub">2304-9782, 2618-8686, 2405-7223</issn>
    </journal-meta>
    <article-meta>
      <article-id pub-id-type="publisher-id">5</article-id>
      <article-id pub-id-type="doi">10.18721/JPM.184.105</article-id>
      <title-group>
        <article-title>Ising model on Fibonacci lattices: ring topology of sphere, cut ring, and torus</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Модель Изинга на решетках Фибоначчи: кольцевая топология сферы, кольцо с разрезом и тор</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <contrib-id contrib-id-type="orcid">0000-0003-0430-168X</contrib-id>
          <name>
            <surname>Pochinok</surname>
            <given-names>Arina</given-names>
          </name>
          <email>pochinok.as@mail.ru</email>
        </contrib>
        <contrib contrib-type="author">
          <contrib-id contrib-id-type="orcid">0000-0002-3578-703X</contrib-id>
          <name>
            <surname>Molochkov</surname>
            <given-names>Alexander</given-names>
          </name>
        </contrib>
        <contrib contrib-type="author">
          <contrib-id contrib-id-type="orcid">0000-0003-2101-4914</contrib-id>
          <name>
            <surname>Chernodub</surname>
            <given-names>Maxim</given-names>
          </name>
          <email>maxim.chernodub@su.se</email>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Chepak</surname>
            <given-names>Alexander</given-names>
          </name>
          <email>chepak.ak@mail.ru</email>
        </contrib>
      </contrib-group>
      <pub-date publication-format="electronic" date-type="pub" iso-8601-date="2025-12-31">
        <day>31</day>
        <month>12</month>
        <year>2025</year>
      </pub-date>
      <volume>18</volume>
      <issue>4.1</issue>
      <fpage>31</fpage>
      <lpage>36</lpage>
      <abstract xml:lang="en">
        <p>We study the Ising model on two-dimensional surfaces discretized using the Fibonacci method with Delaunay triangulation, considering the ring, cut ring, and torus topologies. The phase diagrams reveal a universal critical temperature of TC ≈ 3.33(3)J in the thermodynamic limit, which is consistent with the results for the Fibonacci sphere [1]. Despite the exclusion of topological defects (vertices with coordination numbers 5/7) in the ring and cut ring Fibonacci configurations, deviations from the critical temperature of the ideal flat triangular lattice are observed. The TC values, similar to the spherical case, experience shifts. Notably, the torus, which possesses the minimal defect density (</p>
      </abstract>
      <kwd-group xml:lang="en">
        <kwd>Ising model</kwd>
        <kwd>topological defects</kwd>
        <kwd>Fibonacci lattices</kwd>
        <kwd>Monte Carlo simulation</kwd>
        <kwd>phase diagrams</kwd>
      </kwd-group>
    </article-meta>
  </front>
</article>
