<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE article PUBLIC "-//NLM//DTD JATS (Z39.96) Journal Publishing DTD v1.3 20210610//EN" "JATS-journalpublishing1-3.dtd">
<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-213</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>МАТЕМАТИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MATHEMATICS</subject></subj-group></article-categories><title-group><article-title>ВЫЧИСЛЕНИЕ ФУНКЦИОНАЛЬНЫХ ИНТЕГРАЛОВ С ПОМОЩЬЮ ПОСЛЕДОВАТЕЛЬНОСТЕЙ ШТУРМА</article-title><trans-title-group xml:lang="en"><trans-title>EVALUATION OF FUNCTIONAL INTEGRALS USING STURM SEQUENCES</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>Малютин</surname><given-names>В. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Malyutin</surname><given-names>V. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ведущий научный сотрудник</p></bio><bio xml:lang="en"><p>Dr. Sc. (Physics and Mathematics), Leading Researcher</p></bio><email xlink:type="simple">malyutin@im.bas-net.by</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт математики Национальной академии наук Беларуси</institution></aff><aff xml:lang="en"><institution>Institute of Mathematics of the National Academy of Sciences of Belarus</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2016</year></pub-date><pub-date pub-type="epub"><day>19</day><month>01</month><year>2017</year></pub-date><volume>0</volume><issue>4</issue><fpage>32</fpage><lpage>37</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Малютин В.Б., 2017</copyright-statement><copyright-year>2017</copyright-year><copyright-holder xml:lang="ru">Малютин В.Б.</copyright-holder><copyright-holder xml:lang="en">Malyutin V.B.</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/213">https://vestifm.belnauka.by/jour/article/view/213</self-uri><abstract><p>Данная работа касается двух направлений теории функционального интегрирования: представления физических величин, в частности ядра оператора эволюции, в виде функциональных интегралов и методов вычисления функциональных интегралов. Предложен новый метод приближенного вычисления функциональных интеграловпо условной мере Винера, который основывается на использовании формулы Фейнмана – Каца, дающей интегральное представление для ядра оператора эволюции, и на представлении ядра с помощью собственных значений и собственных векторов оператора. Предлагаемый подход эффективен при вычислении функциональных интегралов по пространству функций, заданных на отрезках большой длины.</p></abstract><trans-abstract xml:lang="en"><p>The present work deals with two directions of the theory of functional integration. The first is the representation of physical quantities, in particular the evolution operator kernel in the form of functional integrals. The second is concerned with the methods for calculation of functional integrals. A new method for approximate evaluation of functional integrals with respect the conditional Wiener measure is proposed in this work. This method is based both on the use of the Feynman – Kac formula giving the integral representation of the evolution operator kernel and on the representation of the kernel using eigenvaluesand eigenvectors of operator. The proposed method is effective for calculation of functional integrals over a space of functions defined on the intervals of large length.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>функциональные интегралы</kwd><kwd>формула Фейнмана – Каца</kwd><kwd>ядро оператора эволюции</kwd><kwd>последовательность Штурма</kwd></kwd-group><kwd-group xml:lang="en"><kwd>functional integrals</kwd><kwd>Feynman – Kac formula</kwd><kwd>evolution operator kernel</kwd><kwd>Sturm sequences</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">Янович, Л. A. Приближенное вычисление континуальных интегралов по гауссовым мерам / Л. А. Янович. – Минск: Наука и техника. 1976. – 383 с.</mixed-citation><mixed-citation xml:lang="en">Yanovich L.A. Approximate calculation of continual integrals through the Gaussian measures. Minsk, Nauka i tekhnika, 1976. 383 p. (in Russian)</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Eгоров, A. Д. Приближенные методы вычисления континуальных интегралов / А. Д. Егоров, П. И. Соболевский, Л. А. Янович. – Минск: Наука и техника. 1985. – 310 с.</mixed-citation><mixed-citation xml:lang="en">Egorov A.D., Sobolevsky P.I., Yanovich L.A. Approximate methods for calculation of continual integrals. Minsk, Nauka i tekhnika, 1985. 310 p. (in Russian)</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Egorov, A. D. Functional integrals: Approximate evaluation and Applications / A. D. Egorov, P. I. Sobolevsky, L. A. Yanovich. – Dordrecht: Kluwer Academic Pablishers, 1993.</mixed-citation><mixed-citation xml:lang="en">Egorov A.D., Sobolevsky P.I., Yanovich L.A. Functional integrals: Approximate evaluation and Applications. Dordrecht, Kluwer Academic Pablishers, 1993.</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Егоров, А. Д. Введение в теорию и приложения функционального интегрирования / А. Д. Егоров, Е. П. Жидков, Ю. Ю. Лобанов. – М.: Физматлит, 2006. – 400 с.</mixed-citation><mixed-citation xml:lang="en">Egorov A.D., Zhidkov E.P., Lobanov Yu.Yu. An introduction to the theory and application of functional integration. Мoscow: Fizmatlit, 2006. 400 p. (in Russian)</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Langouche, F. Functional integration and semi-classical expansions / F. Langouche, D. Roekaerts, E. Tirapegui. – D. Dordrecht: Reidel Pub.Co., 1982. – 324 с.</mixed-citation><mixed-citation xml:lang="en">Langouche F., Roekaerts D., Tirapegui E. Functional integration and semi-classical expansions. Dordrecht, D. Reidel Pub.Co., 1982. 324 p.</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Horacio, S. Wio. Application of path integration to stochastic process: an introduction / S. Wio. Horacio. – World Scientific Publishing Company, 2013. – 176 р.</mixed-citation><mixed-citation xml:lang="en">Wio H.S. Application of Path Integration to Stochastic Processes: An Introduction. World Scientific Publishing Company, 2013. 176 p.</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Glimm, J. Quantum Physics. A functional integral point of view / J. Glimm, A. Jaffe. – Berlin; Heidelberg; New York: Springer-Verlag, 1981. – 417 р.</mixed-citation><mixed-citation xml:lang="en">Glimm J., Jaffe A. Quantum Physics. A functional integral point of view. Berlin-Heidelberg-New York, Springer-Verlag, 1981. 417 p.</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Feynman, R. P. Quantum mechanics and path integrals / R. P. Feynman, A. R. Hibbs. – McGraw-Hill, New York, 1965. – 377 р.</mixed-citation><mixed-citation xml:lang="en">Feynman R.P., Hibbs A.R. Quantum mechanics and path integrals. New York, McGraw-Hill, 1965. 377 p.</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Kleinert, H. Path integrals in quantum mechanics, statistics polymer physics, and ﬁnancial markets / H. Kleinert. – Singapore: World Scientiﬁc Publishing, 2004. – 1592 р.</mixed-citation><mixed-citation xml:lang="en">Kleinert H. Path integrals in quantum mechanics, statistics polymer physics, and financial markets. Singapore: World Scientiﬁc Publishing, 2004. 1592 p.</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Боголюбов, Н. Н. Введение в теорию квантованных полей / Н. Н. Боголюбов, Д. В. Ширков. – М., 1976.– 479 с.</mixed-citation><mixed-citation xml:lang="en">Bogolyubov N.N., Shirkov D.V. An introduction to the theory of quantum fields. Мoscow, Nauka, 1976. 479 p. (in Russian)</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Решение краевых задач методом Монте-Карло / Б. С. Елепов [и др.]. – Новосибирск: Наука, 1980.– 174 с.</mixed-citation><mixed-citation xml:lang="en">Elepov B.S., Kronberg A.A., Mikhailov G.A., Sabel’fel’d K.K. Solution of boundary-value problems by the Monte-Carlo method. Novosibirsk: Nauka, 1980. 174 p.</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Сабельфельд, К. К. О приближенном вычислении винеровских континуальных интегралов методом Монте-Карло / К. К. Сабельфельд // Журн. вычисл. математики и мат. физики. – 1979. – Т. 19, № 1. – C. 29–43.</mixed-citation><mixed-citation xml:lang="en">Sabel’fel’d K.K. Approximate evaluation of wiener continual integrals by the Monte Carlo method. USSR Computational Mathematics and Mathematical Physics, 1979, vol. 19, no. 1, pp. 29–43. doi:10.1016/0041-5553(79)90064-8.</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Risken, H. The Fokker-Plank equation: methods of solution and applications / H. Risken. – Springer-Verlag, 1984. – 472 р.</mixed-citation><mixed-citation xml:lang="en">Risken H., Frank T. The Fokker-Plank equation: methods of solution and applications. Springer-Verlag, 1984. 472 p.doi:10.1007/978-3-642-61544-3.</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Wilkinson, J. H. The algebraic eigenvalue problem / J. H. Wilkinson. – Oxford, 1965. – 662 р.</mixed-citation><mixed-citation xml:lang="en">Wilkinson J.H. The algebraic eigenvalue problem. Oxford, 1965. 662 p.</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
