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<!DOCTYPE article PUBLIC "-//NLM//DTD JATS (Z39.96) Journal Archiving and Interchange DTD with OASIS Tables with MathML3 v1.4 20241031//EN" "https://jats.nlm.nih.gov/archiving/1.4/JATS-archive-oasis-article1-4-mathml3.dtd">
<article xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" dtd-version="1.4" article-type="research-article" xml:lang="en"><front><journal-meta><journal-title-group><journal-title xml:lang="ru">Дальневосточный математический журнал</journal-title></journal-title-group><issn publication-format="print">1608-845X</issn></journal-meta><article-meta><article-id pub-id-type="doi">10.47910/FEMJ202607</article-id><article-categories><subj-group><subject>Other</subject></subj-group></article-categories><title-group><article-title xml:lang="ru">Вычисление критической температуры спинового льда на решетке Апамея с помощью сверточной нейронной сети</article-title><trans-title-group xml:lang="en"><trans-title>Determination of the critical temperature of the Apamea lattice using a convolutional neural network classifier</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="ru"><surname>Овчинников</surname><given-names>П. А.</given-names></name><name xml:lang="en"><surname>Ovchinnikov</surname><given-names>P. A.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/><xref ref-type="aff" rid="aff3"/><xref ref-type="aff" rid="aff4"/><email>ovchinnikov.pa@dvfu.ru</email><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1745-2447</contrib-id></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="ru"><surname>Солдатов</surname><given-names>К. С.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/><xref ref-type="aff" rid="aff3"/><xref ref-type="aff" rid="aff4"/><email>soldatov_ks@dvfu.ru</email><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9579-0452</contrib-id></contrib><aff-alternatives id="aff1"><aff><institution xml:lang="en">Far Eastern Federal University</institution><city xml:lang="en">Vladivostok</city><country xml:lang="en">Russia</country></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Institute for Applied Mathematics, Far Eastern Branch, Russian Academy of Sciences,</institution><city xml:lang="en">Vladivostok</city><country xml:lang="en">Russia</country></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="ru">Институт наукоемких технологий и передовых материалов, Дальневосточный федеральный университет</institution><city xml:lang="ru">Владивосток</city><country xml:lang="ru">Россия</country></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="ru">Институт прикладной математики Дальневосточного отделения Российской академии наук</institution><city xml:lang="ru">Владивосток</city><country xml:lang="ru">Россия</country></aff></aff-alternatives></contrib-group><pub-date pub-type="epub" iso-8601-date="2026-06-15"><day>15</day><month>06</month><year>2026</year></pub-date><volume>26</volume><issue>1</issue><fpage>57</fpage><lpage>67</lpage><history><date date-type="received" iso-8601-date="2025-10-20"><day>20</day><month>10</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-12-12"><day>12</day><month>12</month><year>2025</year></date></history><permissions><license xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:title="CC BY 4.0"><ali:license_ref>https://creativecommons.org/licenses/by/4.0/</ali:license_ref><license-p xml:lang="ru">CC BY 4.0</license-p></license></permissions><self-uri xlink:href="http://femj.iam.dvo.ru/periodical.php?art=574" xlink:title="http://femj.iam.dvo.ru/periodical.php?art=574">http://femj.iam.dvo.ru/periodical.php?art=574</self-uri><self-uri content-type="pdf" xlink:href="publication-f88c797d-d84e-4382-bef8-6c793bb69997.pdf" xlink:title="PDF"/><abstract xml:lang="ru"><p>В настоящей работе решается задача определения критической температуры модели Изинга на решетке Апамея, представляющей собой вершино-фрустрированную геометрию квадратного искусственного спинового льда. Исследовалась модель в рамках ферромагнитного взаимодействия ближайших соседей с периодическими граничными условиями, был произведен расчет теплоёмкости, средней намагниченности и магнитной восприимчивости. С помощью свёрточного нейросетевого классификатора фазовых состояний были получены температурные профили усреднённой апостериорной вероятности высокотемпературной фазы, которые образуют S-образные кривые, пересекающиеся в критической точке. Показано, что разработанный CNN-классификатор можно успешно использовать для анализа фазовых состояний сложных фрустрированных геометрических решеток при правильной укладке входных данных, что делает разработанный подход перспективным и универсальным инструментом для анализа фазовых переходов в искусственных спиновых системах.</p></abstract><abstract xml:lang="en" abstract-type="summary"><p>In this work, the problem of determining the critical temperature of the Ising model on an Apamea lattice is addressed. This lattice represents a vertex-frustrated geometry of a square artificial spin ice. The model was studied within the framework of ferromagnetic nearest-neighbor interaction with periodic boundary conditions. Calculations of specific heat, average magnetization, and magnetic susceptibility were performed. Using a convolutional neural network (CNN) classifier for phase states, temperature profiles of the averaged posterior probability of the high-temperature phase were obtained, forming S-shaped curves that intersect in the critical temperature. It is shown that the developed CNN classifier can be successfully used for complex vertex-frustrated geometries solely through proper data structuring, making this approach a promising universal tool for analyzing phase transitions in artificial spin systems with complex geometry.</p></abstract><kwd-group xml:lang="ru"><kwd>спиновый лёд</kwd><kwd>решётка Апамея</kwd><kwd>сверточные нейронные сети</kwd><kwd>фазовый переход</kwd><kwd>критическая температура</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Spin ice</kwd><kwd>Apamea lattice</kwd><kwd>convolutional neural networks</kwd><kwd>phase transition</kwd><kwd>critical temperature</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено за счет гранта Российского научного фонда № 25-21-00286, https://rscf.ru/project/25-21-00286</funding-statement><funding-statement xml:lang="en">The study was supported by grant No. 25-21-00286 from the Russian Science Foundation, https://rscf.ru/project/25-21-00286/</funding-statement></funding-group></article-meta></front><back><ref-list><ref id="ref1"><mixed-citation publication-type="other" xml:lang="ru">Sandvik A. 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