Seminars Digest, Vol 84, Issue 4

Send Seminars mailing list submissions to seminars@itp.ac.ru To subscribe or unsubscribe via the World Wide Web, visit https://mailman.itp.ac.ru/mailman/listinfo/seminars or, via email, send a message with subject or body 'help' to seminars-request@itp.ac.ru You can reach the person managing the list at seminars-owner@itp.ac.ru When replying, please edit your Subject line so it is more specific than "Re: Contents of Seminars digest..." Today's Topics: 1. Friday 24.04.2026 (info+seminars@itp.ac.ru) 2. Thursday 23.04.2026 - ITP/CAS Colloquium (info+seminars@itp.ac.ru) ---------------------------------------------------------------------- Message: 1 Date: Tue, 21 Apr 2026 07:02:01 +0000 From: info+seminars@itp.ac.ru To: staff@itp.ac.ru, students@itp.ac.ru, seminars@itp.ac.ru Subject: [Landau ITP Seminars] Friday 24.04.2026 Message-ID: <vycmePoTD1oZlZHOOGe2k8YKmmZTaoMdXWiEXiaT0@wwwserv2> Content-Type: text/plain; charset=UTF-8 Уважаемые коллеги! На заседании Ученого совета ИТФ в пятницу 24.04 будет заслушан 1 доклад: 11:30 М.А. Шишкин, Е.С. Пикина, В.В. Лебедев Режимы жемчужной динамики везикул Мы изучаем &quot;pearling instability&quot; вытянутых везикул под натяжением [Bar-Ziv and Moses, PRL, 1994], сходную классической неустойчивости Рэлея–Плато. В первую очередь мы строим аналитическую теорию маргинальных мод при плавно изменяющемся вдоль везикулы поверхностном натяжении. Это позволяет объясняснить расхождение между численным моделированием динамики в растягивающем потоке [Narsimhan et al., JFM, 2015], где неустойчивость распространяется от краев, и экспериментами [Kantsler et al., PRL, 2008]: учёт небольшого маргинального возмущения в нашем моделировании приводит к образованию первых жемчужин именно в центре. После формирования жемчужин динамика определятся зависимостью растягивающей силы от длины везикулы: возможен каскад неустойчивостей или квазистационарный режим. В последнем случае медленная динамика связана с перекачкой жидкости между жемчужинами; при локализованном воздействии на краях, крупные жемчужины поглощают мелкие. Рассматривая &quot;свободные жемчужины&quot; как солитонные стационарные решения на цилиндрическом фоне, мы устанавливаем убывающий характер зависимости поверхностного натяжения от размера жемчужины, что и объясняет неустойчивость состояния с несколькими жемчужинами. ID и пароль онлайн-трансляций в Zoom те же, что и для предыдущих трансляций семинаров и докладов на Ученом совете: https://zoom.us/j/96899364518?pwd=MzBsR2lYT0lYL2x2b1oyNU9LeWlWUT09 Meeting ID: 968 9936 4518 Пароль: 250319 ------------------------------ Message: 2 Date: Tue, 21 Apr 2026 07:02:02 +0000 From: info+seminars@itp.ac.ru To: staff@itp.ac.ru, students@itp.ac.ru, seminars@itp.ac.ru Subject: [Landau ITP Seminars] Thursday 23.04.2026 - ITP/CAS Colloquium Message-ID: <JA9keswBSoM1GC8mRH8Kz6MLcH7eV5kwoDDcvUv3ic@wwwserv2> Content-Type: text/plain; charset=UTF-8 Уважаемые коллеги! На онлайн коллоквиум по теоретической физике в четверг 23.04 будут заслушаны 2 доклада: 1) 10:00:00 по московскому времени: Vladimir Mineev (Landau Institute for Theoretical Physics) Effective Mass and Field-Reinforced Superconductivity in Uranium Compounds The presented theory of strong coupling superconductivity in uranium compounds is based on electron–electron interaction through magnetic fluctuations described by frequency-dependent magnetic susceptibility. The magnetic field dependence of the electron effective mass is expressed through the field dependence of the magnetic susceptibility components. It is shown that the intensity of triplet pairing, and hence the critical temperature of the transition to the superconducting state, are also determined by the field-dependent susceptibility. The results are discussed in relation to the properties of ferromagnetic uranium compounds URhGe and UCoGe. Biography V.Mineev graduated from Moscow Institute of Physics and Technology in 1969. He defended his PhD Thesis (1974) and Doctor of Science Degree (1983) in Landau Institute for Theoretical Physics Moscow, USSR. During 1992-1999 V.P. Mineev was Vice-director of the Landau Institute and at the same time Professor and Head of Chair « Problems of Theoretical Physics »in Moscow Institute of Physics and Technology. Since 1999 till 2022 he was Senior Researcher in Commissariat a l’Energie Atomique, Grenoble, France. At present he is Principal Researcher in Landau Institute for Theoretical Physics. V.P.Mineev is awarded by L.D.Landau prize of Russian Academy of Sciences in 1992 and by Onsager prize of American Physical Society in 2014. Books 1. « Topologically Stable Defects and Solitons in Ordered Media », Harwood Academic Publishers 1998. 2. « Introduction to Unconventional Superconductivity » (in co-authorship with K.V.Samokhin) Gordon and Breach Science Publishers 1999. 3. “Kinetics” (in co-authorship with V.N.Gorelkin) МЦНМО 2024. Zoom: 836 2705 2896 Passcode: 631540 2) 11:00:00 по московскому времени: Yi-Bo Yang (Institute of Theoretical Physics, Chinese Academy of Sciences) Masses of Hadrons Containing Heavy Quarks and Their QED Corrections In theory, Quantum Chromodynamics only needs quark masses and the strong coupling constant calibrated from experimental data to predict hadronic properties. In practice, achieving this and understanding the transition from quark to hadron masses relies on large-scale first-principles lattice QCD simulations. Using domestically generated CLQCD gauge configurations, we developed numerical techniques to systematically study ground-state hadrons containing up, down, strange, charm, and bottom quarks, including QED corrections. We compute their masses and decay constants, which effectively support phenomenological and experimental studies on the origin of hadron masses and in flavor physics. Biography: Prof. Yi-Bo Yang has been engaged in the study of hadron structure in lattice quantum chromodynamics (LQCD), focusing on the origin of mass in strong interactions and the internal structure of hadrons. He has collaboratively ported LQCD software to various domestic exascale architectures, achieving full-system operation. This enabled the construction of the CLQCD ensembles which can provide independent and precise predictions for strong interactions. He also established the Lattice Parton collaboration and serves as the spokesperson. His work on the gluon contribution to nucleon spin was selected as a highlight of the year by the American Physical Society in 2017. Zoom: 836 2705 2896 Passcode: 631540 Zoom meeting ID: 890 7187 2369 Пароль: 544845 ------------------------------ Subject: Digest Footer _______________________________________________ Seminars mailing list Seminars@itp.ac.ru https://mailman.itp.ac.ru/mailman/listinfo/seminars ------------------------------ End of Seminars Digest, Vol 84, Issue 4 ***************************************