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Today's Topics:
1. Friday 27.03.2026 (info+seminars@itp.ac.ru)
2. Thursday 26.03.2026 - ITP/CAS Colloquium (info+seminars@itp.ac.ru)
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Message: 1
Date: Tue, 24 Mar 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] Friday 27.03.2026
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Π£Π²Π°ΠΆΠ°Π΅ΠΌΡΠ΅ ΠΊΠΎΠ»Π»Π΅Π³ΠΈ!
ΠΠ° Π·Π°ΡΠ΅Π΄Π°Π½ΠΈΠΈ Π£ΡΠ΅Π½ΠΎΠ³ΠΎ ΡΠΎΠ²Π΅ΡΠ° ΠΠ’Π€ Π² ΠΏΡΡΠ½ΠΈΡΡ 27.03 Π±ΡΠ΄ΡΡ Π·Π°ΡΠ»ΡΡΠ°Π½Ρ 2 Π΄ΠΎΠΊΠ»Π°Π΄Π°:
11:30 Π.Π‘. ΠΠ½Π½Π΅Π½ΠΊΠΎΠ², Π.Π. ΠΠΎΠΏΠ°ΡΠΎΠ², Π.Π‘. ΠΠ΅Π»ΡΠ½ΠΈΠΊΠΎΠ²
ΠΠ·Π°ΠΈΠΌΠΎΠ΄Π΅ΠΉΡΡΠ²ΠΈΠ΅ ΡΠ΅Π³Π½Π΅ΡΠΎΡΠ»Π΅ΠΊΡΡΠΈΡΠ΅ΡΡΠ²Π° ΠΈ ΠΌΠ΅ΠΆΡΠ»ΠΎΠ΅Π²ΠΎΠΉ ΡΠ²Π΅ΡΡ
ΠΏΡΠΎΠ²ΠΎΠ΄ΠΈΠΌΠΎΡΡΠΈ Π² Π²Π°Π½-Π΄Π΅Ρ-ΠΠ°Π°Π»ΡΡΠΎΠ²ΡΡ
Π±ΠΈΡΠ»ΠΎΡΡ
Π ΡΠ°Π±ΠΎΡΠ΅ [1] ΡΠ΅ΠΎΡΠ΅ΡΠΈΡΠ΅ΡΠΊΠΈ ΠΈΡΡΠ»Π΅Π΄ΡΠ΅ΡΡΡ ΠΌΠΎΠ΄Π΅Π»Ρ Π±ΠΈΡΠ»ΠΎΡ, ΠΏΡΠ΅Π΄ΠΏΠΎΠ»Π°Π³Π°ΡΡΠ°Ρ Π½Π°Π»ΠΈΡΠΈΠ΅ ΠΌΠ΅ΠΆΡΠ»ΠΎΠ΅Π²ΠΎΠ³ΠΎ ΡΠ²Π΅ΡΡ ΠΏΡΠΎΠ²ΠΎΠ΄ΡΡΠ΅Π³ΠΎ ΡΠΏΠ°ΡΠΈΠ²Π°Π½ΠΈΡ ΠΈ ΡΡΠ½Π½Π΅Π»ΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΠΌΠ΅ΠΆΠ΄Ρ ΡΠ»ΠΎΡΠΌΠΈ. ΠΡΠΈΡΡΡΡΡΠ²ΠΈΠ΅ ΡΠΏΠΎΠ½ΡΠ°Π½Π½ΠΎΠΉ ΡΠ΅Π³Π½Π΅ΡΠΎΡΠ»Π΅ΠΊΡΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΏΠΎΠ»ΡΡΠΈΠ·Π°ΡΠΈΠΈ, ΠΏΠ΅ΡΠΏΠ΅Π½Π΄ΠΈΠΊΡΠ»ΡΡΠ½ΠΎΠΉ ΡΠ»ΠΎΡΠΌ, ΡΡΠΈΡΡΠ²Π°Π΅ΡΡΡ ΡΠ΅ΡΠ΅Π· ΠΎΡΠ½ΠΎΡΠΈΡΠ΅Π»ΡΠ½ΡΠΉ ΡΠ΄Π²ΠΈΠ³ ΡΠ½Π΅ΡΠ³Π΅ΡΠΈΡΠ΅ΡΠΊΠΈΡ Π·ΠΎΠ½ ΡΠ»Π΅ΠΊΡΡΠΎΠ½ΠΎΠ² Π² ΡΠ°Π·Π½ΡΡ ΡΠ»ΠΎΡΡ . ΠΠ»Ρ ΡΡΡΠΏΠ΅Π½ΡΠ°ΡΠΎΠ³ΠΎ ΡΠ΄Π²ΠΈΠ³Π° Π·ΠΎΠ½, ΠΌΠΎΠ΄Π΅Π»ΠΈΡΡΡΡΠ΅Π³ΠΎ Π³ΡΠ°Π½ΠΈΡΡ ΠΌΠ΅ΠΆΠ΄Ρ Π΄Π²ΡΠΌΡ ΠΏΡΠΎΡΠΈΠ²ΠΎΠΏΠΎΠ»ΠΎΠΆΠ½ΠΎ ΠΏΠΎΠ»ΡΡΠΈΠ·ΠΎΠ²Π°Π½Π½ΡΠΌΠΈ Π΄ΠΎΠΌΠ΅Π½Π°ΠΌΠΈ, ΠΏΡΠΎΠ΄Π΅ΠΌΠΎΠ½ΡΡΡΠΈΡΠΎΠ²Π°Π½Π° Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡΡ ΠΎΠ±ΡΠ°Π·ΠΎΠ²Π°Π½ΠΈΡ Π»ΠΎΠΊΠ°Π»ΠΈΠ·ΠΎΠ²Π°Π½Π½ΡΡ ΡΠ²Π΅ΡΡ ΠΏΡΠΎΠ²ΠΎΠ΄ΡΡΠΈΡ ΡΠΎΡΡΠΎΡΠ½ΠΈΠΉ ΠΏΡΠΈ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ°Ρ ΠΏΡΠ΅Π²ΡΡΠ°ΡΡΠΈΡ ΠΊΡΠΈΡΠΈΡΠ΅ΡΠΊΡΡ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΡ Π²ΠΎΠ·Π½ΠΈΠΊΠ½ΠΎΠ²Π΅Π½ΠΈΡ ΠΎΠ΄Π½ΠΎΡΠΎΠ΄Π½ΠΎΠΉ ΡΠ²Π΅ΡΡ ΠΏΡΠΎΠ²ΠΎΠ΄ΠΈΠΌΠΎΡΡΠΈ. ΠΡΠ΄Π΅Π»ΡΠ½ΠΎ Π°Π½Π°Π»ΠΈΠ·ΠΈΡΡΠ΅ΡΡΡ Π²Π»ΠΈΡΠ½ΠΈΠ΅ ΠΌΠ΅ΠΆΡΠ»ΠΎΠ΅Π²ΠΎΠ³ΠΎ ΡΡΠ½Π½Π΅Π»ΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΠΈ Π²Π½Π΅ΡΠ½Π΅Π³ΠΎ ΠΌΠ°Π³Π½ΠΈΡΠ½ΠΎΠ³ΠΎ ΠΏΠΎΠ»Ρ Π½Π° ΠΌΠ΅ΠΆΡΠ»ΠΎΠ΅Π²ΡΠ΅ ΡΠ²Π΅ΡΡ ΠΏΡΠΎΠ²ΠΎΠ΄ΡΡΠΈΠ΅ ΡΠΎΡΡΠΎΡΠ½ΠΈΡ. ΠΠΎΠ»ΡΡΠ΅Π½Π½ΡΠ΅ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΡ ΠΎΠ±ΡΡΠΆΠ΄Π°ΡΡΡΡ Π² ΠΊΠΎΠ½ΡΠ΅ΠΊΡΡΠ΅ Π½Π΅Π΄Π°Π²Π½ΠΈΡ ΡΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠΎΠ² ΠΎ ΡΠΎΡΡΡΠ΅ΡΡΠ²ΠΎΠ²Π°Π½ΠΈΠΈ ΡΠ²Π΅ΡΡ ΠΏΡΠΎΠ²ΠΎΠ΄ΠΈΠΌΠΎΡΡΠΈ ΠΈ ΡΠ΅Π³Π½Π΅ΡΠΎΡΠ»Π΅ΠΊΡΡΠΈΡΠ΅ΡΡΠ²Π° Π² Π²Π°Π½-Π΄Π΅Ρ-Π²Π°Π°Π»ΡΡΠΎΠ²ΡΡ Π±ΠΈΡΠ»ΠΎΡΡ [2,3].
[1] D. S. Annenkov, A.A. Kopasov, A.S. Mel'nikov, Phys. Rev. B 112, 224521 (2025),
[2] A. Jindal, A. Saha, Z. Li et al., Nature 613, 4852 (2023),
[3] Z. Li, A. Jindal, A. Strasser et al., Phys. Rev. Lett. 133, 216002 (2024).
11:30 ΠΠ»Π΅ΠΊΡΠ°Π½Π΄Ρ ΠΡΡΠ΅ΠΌΡΠ΅Π²
ΠΠΎΡΡΠ΅Π»ΡΡΠΈΠΎΠ½Π½ΡΠ΅ ΡΡΠ½ΠΊΡΠΈΠΈ Π² ΡΠ΅ΠΎΡΠΈΠΈ ΡΡΡΡΠ½ ΠΈ ΠΊΠ²Π°Π½ΡΠΎΠ²ΠΎΠΉ Π³ΡΠ°Π²ΠΈΡΠ°ΡΠΈΠΈ ΠΠΈΡΠ²ΠΈΠ»Π»Ρ (ΠΏΠΎ ΠΌΠ°ΡΠ΅ΡΠΈΠ°Π»Π°ΠΌ ΠΊΠ°Π½Π΄ΠΈΠ΄Π°ΡΡΠΊΠΎΠΉ Π΄ΠΈΡΡΠ΅ΡΡΠ°ΡΠΈΠΈ)
Π Π΄ΠΈΡΡΠ΅ΡΡΠ°ΡΠΈΠΈ ΡΠ°ΡΡΠΌΠΎΡΡΠ΅Π½Ρ Π½Π΅ΠΊΠΎΡΠΎΡΡΠ΅ Π°ΡΠΏΠ΅ΠΊΡΡ Π΄ΡΠ°Π»ΡΠ½ΠΎΡΡΠΈ ΠΌΠ΅ΠΆΠ΄Ρ "Π½Π΅ΠΏΡΠ΅ΡΡΠ²Π½ΡΠΌ" (ΡΠ΅ΠΎΡΠ΅ΡΠΈΠΊΠΎ-ΠΏΠΎΠ»Π΅Π²ΡΠΌ) ΠΈ "Π΄ΠΈΡΠΊΡΠ΅ΡΠ½ΡΠΌ" ΠΏΠΎΠ΄Ρ ΠΎΠ΄ΠΎΠΌ ΠΊ ΠΎΠΏΠΈΡΠ°Π½ΠΈΡ ΠΌΠΎΠ΄Π΅Π»ΠΈ "ΠΌΠΈΠ½ΠΈΠΌΠ°Π»ΡΠ½ΠΎΠΉ ΠΠΈΡΠ²ΠΈΠ»Π»Π΅Π²ΡΠΊΠΎΠΉ Π³ΡΠ°Π²ΠΈΡΠ°ΡΠΈΠΈ" Π² ΡΠ΅ΠΎΡΠΈΠΈ ΡΡΡΡΠ½. Π ΡΠ΅ΠΎΡΠ΅ΡΠΈΠΊΠΎ-ΠΏΠΎΠ»Π΅Π²ΠΎΠΌ ΠΏΠΎΠ΄Ρ ΠΎΠ΄Π΅ ΡΠ°Π·Π²ΠΈΡ Π°Π½Π°Π»ΠΈΡΠΈΡΠ΅ΡΠΊΠΈΠΉ ΠΌΠ΅ΡΠΎΠ΄ Π²ΡΡΠΈΡΠ»Π΅Π½ΠΈΡ ΡΡΡΡΠ½Π½ΡΡ Π°ΠΌΠΏΠ»ΠΈΡΡΠ΄ Ρ ΠΏΠΎΠΌΠΎΡΡΡ «Π²ΡΡΡΠΈΡ ΡΡΠ°Π²Π½Π΅Π½ΠΈΠΉ Π΄Π²ΠΈΠΆΠ΅Π½ΠΈΡ» Π² ΡΠ΅ΠΎΡΠΈΠΈ ΠΠΈΡΠ²ΠΈΠ»Π»Ρ ΠΈ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ ΠΊ Π²ΡΡΠΈΡΠ»Π΅Π½ΠΈΡ Π°ΠΌΠΏΠ»ΠΈΡΡΠ΄Ρ Π² ΡΠΎΠ΄Π΅ 1. ΠΠ°ΡΠ΅ΠΌ ΠΏΡΠΎΠ΄Π΅ΠΌΠΎΠ½ΡΡΡΠΈΡΠΎΠ²Π°Π½Π° ΡΠ²ΡΠ·Ρ ΠΌΠ΅ΠΆΠ΄Ρ ΠΊΠ²Π°Π·ΠΈΠΊΠ»Π°ΡΡΠΈΡΠ΅ΡΠΊΠΈΠΌ ΠΏΡΠ΅Π΄Π΅Π»ΠΎΠΌ ΡΡΡΡΠ½Π½ΡΡ Π°ΠΌΠΏΠ»ΠΈΡΡΠ΄ ΠΈ ΠΎΠ±ΡΠ΅ΠΌΠ°ΠΌΠΈ ΠΏΡΠΎΡΡΡΠ°Π½ΡΡΠ² ΠΌΠΎΠ΄ΡΠ»Π΅ΠΉ, Π²ΡΡΠΈΡΠ»ΡΠ΅ΠΌΡΠΌΠΈ Π² ΡΠ΅ΡΠΌΠΈΠ½Π°Ρ ΠΊΠ»Π°ΡΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΠ΅ΠΎΡΠΈΠΈ ΠΠΈΡΠ²ΠΈΠ»Π»Ρ. ΠΠ°ΠΊΠΎΠ½Π΅Ρ, ΠΏΡΠ΅Π΄Π»ΠΎΠΆΠ΅Π½ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΡΠΉ ΡΠΏΠΎΡΠΎΠ± Π²ΡΡΠΈΡΠ»Π΅Π½ΠΈΡ ΠΏΡΠ΅Π΄ΠΏΠΎΠ»Π°Π³Π°Π΅ΠΌΡΡ Π°Π½Π°Π»ΠΎΠ³ΠΎΠ² Π°ΠΌΠΏΠ»ΠΈΡΡΠ΄ Π² Π΄ΠΈΡΠΊΡΠ΅ΡΠ½ΠΎΠΌ ΠΏΠΎΠ΄Ρ ΠΎΠ΄Π΅, ΠΊΠΎΡΠΎΡΡΠΉ ΠΏΠΎΠ·Π²ΠΎΠ»ΡΠ΅Ρ ΠΏΠΎΠ»ΡΡΠΈΡΡ ΠΎΠ±ΡΡΡ ΡΠΎΡΠΌΡΠ»Ρ Π΄Π»Ρ Π½ΠΈΡ Π² ΡΠ΅ΡΠΌΠΈΠ½Π°Ρ «Π΄ΠΈΠ°Π³ΡΠ°ΠΌΠΌΠ½ΠΎΠΉ ΡΠ΅Ρ Π½ΠΈΠΊΠΈ» Ρ ΠΏΡΠΎΡΡΡΠΌΠΈ ΠΏΡΠ°Π²ΠΈΠ»Π°ΠΌΠΈ.
ID ΠΈ ΠΏΠ°ΡΠΎΠ»Ρ ΠΎΠ½Π»Π°ΠΉΠ½-ΡΡΠ°Π½ΡΠ»ΡΡΠΈΠΉ Π² Zoom ΡΠ΅ ΠΆΠ΅, ΡΡΠΎ ΠΈ Π΄Π»Ρ ΠΏΡΠ΅Π΄ΡΠ΄ΡΡΠΈΡ
ΡΡΠ°Π½ΡΠ»ΡΡΠΈΠΉ ΡΠ΅ΠΌΠΈΠ½Π°ΡΠΎΠ² ΠΈ Π΄ΠΎΠΊΠ»Π°Π΄ΠΎΠ² Π½Π° Π£ΡΠ΅Π½ΠΎΠΌ ΡΠΎΠ²Π΅ΡΠ΅:
https://zoom.us/j/96899364518?pwd=MzBsR2lYT0lYL2x2b1oyNU9LeWlWUT09
Meeting ID: 968 9936 4518
ΠΠ°ΡΠΎΠ»Ρ: 250319
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Message: 2
Date: Tue, 24 Mar 2026 07:02:03 +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 26.03.2026 - ITP/CAS
Colloquium
Message-ID: <ESQC6Ta43DuEU6MqC8Y2uepnTZpRx4HgfS0EVM@wwwserv2>
Content-Type: text/plain; charset=UTF-8
Π£Π²Π°ΠΆΠ°Π΅ΠΌΡΠ΅ ΠΊΠΎΠ»Π»Π΅Π³ΠΈ!
ΠΠ° ΠΎΠ½Π»Π°ΠΉΠ½ ΠΊΠΎΠ»Π»ΠΎΠΊΠ²ΠΈΡΠΌ ΠΏΠΎ ΡΠ΅ΠΎΡΠ΅ΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΠΈΠ·ΠΈΠΊΠ΅ Π² ΡΠ΅ΡΠ²Π΅ΡΠ³ 26.03 Π±ΡΠ΄ΡΡ Π·Π°ΡΠ»ΡΡΠ°Π½Ρ 2 Π΄ΠΎΠΊΠ»Π°Π΄Π°:
1) 10:00:00 ΠΏΠΎ ΠΌΠΎΡΠΊΠΎΠ²ΡΠΊΠΎΠΌΡ Π²ΡΠ΅ΠΌΠ΅Π½ΠΈ: Song He (Institute of Theoretical Physics, Chinese Academy of Sciences)
Recent Progress on Particle and String Scattering
I will give an overview of some recent progress in the computation and understanding of new structures of scattering amplitudes and related quantities in Quantum Field Theory, gravity and string theory, including all-loop geometries underlying amplitudes and correlators in maximally supersymmetric Yang-Mills theory, as well as a combinatorial formulation for real-world scattering of colored scalars, pions and gluons.
Biography:
Song He is mostly interested in fundamental questions in QFT, gravity and string theory, as well as applications to particle physics, cosmology and related topics in mathematics. He got his PhD from Peking University in 2009, and worked at Albert-Einstein Institute, Perimeter Institute and Institute for Advanced Study, before joining Institute of Theoretical Physics, Chinese Academy of Sciences in 2015.
Some highlights of his research include a new formulation for scattering of massless particles, the discovery of combinatorial geometries underlying real-world scattering, as well as higher-order/exact results in QFT and quantum gravity.
Zoom: 894 8844 8450
Passcode: 441769
2) 11:00:00 ΠΏΠΎ ΠΌΠΎΡΠΊΠΎΠ²ΡΠΊΠΎΠΌΡ Π²ΡΠ΅ΠΌΠ΅Π½ΠΈ: Alexander Belavin (L. D. Landau Institute for Theoretical Physics, Russian Academy of Sciences)
Free Field Construction of Heterotic String Compactified on Calabi-Yau Manifolds of Berglund-Hubsch Type in the Batyrev-Borisov Combinatorial Approach
Heterotic string models in 4-dimensions are the hybrid theories of a left-moving $ N=1 $ fermionic string whose additional 6-dimensions are compactified on an $ N=2 $ SCFT with central charge 9, and a right-moving bosonic string, whose additional dimensions are also compactified on an $ N=2 $ SCFT with central charge 9, and the remaining 13 dimensions compactified on the torus of $ E(8) \times SO(10) $ Lie algebra.
The important class of exactly solvable heterotic string models considered earlier by D. Gepner corresponds to products of $ N=2 $ minimal models with total central charge $ c=9 $. These models are known to describe heterotic string models compactified on Calabi-Yau manifolds, which belong to a special subclass of general CY manifolds of Berglund-Hubsch type. We generalize this construction to all cases of compactifications on Calabi-Yau manifolds of general Berglund-Hubsch type, using the Batyrev-Borisov combinatorial approach. In particular, starting from the mirror pair of Batyrev lattices corresponding to a given CY manifold, we construct vertex operators of the complete physical theory as cohomology of Borisov differentials that correspond to points of reflexive Batyrev polyhedra. In particular, we show how the number of 27, 27 and singlet representations of $ E(6) $ is determined by the data of the reflexive Batyrev polytope that determines this CY manifold.
Biography:
Alexander Belavin, born on August 28, 1942, in Gorky (now Nizhny Novgorod) into an engineer's family, is a Russian theoretical physicist, Corresponding Member of the Russian Academy of Sciences, and Chief Researcher at the Landau Institute for Theoretical Physics. He specializes in quantum field theory and string theory, and is known for the discovery of instantons (1975), the development of conformal field theory (CFT), and his contributions to string theory. He graduated from MEPhI in 1967 and completed his postgraduate studies. Since 1976, he has been working at the Landau Institute for Theoretical Physics of the Russian Academy of Sciences. Together with his colleagues, he discovered instantons in gauge field theory, which became an important step toward understanding quark confinement. In 1984, he established the foundations of two-dimensional conformal field theory (jointly with A. A. Polyakov and A. B. Zamolodchikov).
Zoom: 894 8844 8450
Passcode: 441769
Zoom meeting ID: 890 7187 2369
ΠΠ°ΡΠΎΠ»Ρ: 544845
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Subject: Digest Footer
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End of Seminars Digest, Vol 83, Issue 6
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