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The dynamics of short envelope solitons in media with controlled dispersion
Physics Letters A. 2007. No. 363. P. 411–413.
The dynamics of short envelope solitons in media with controlled dispersion is investigated in the framework of the third-order nonlinear Schrödinger equation. Evolution of the solitons amplitude is analyzed in the adiabatic approximation. The existence of short envelope solitons independent from linear dispersion inhomogeneity is shown.
Гущина В. А., / Series chemrxiv-2023-vpzhz-v2 "ChemRxiv". 2023.
All-inorganic perovskite CsPbBr3 and Cs4PbBr6 nanoparticles are being intensively studied due to their unique properties and wide range of applications; however, however, the nature of their optical properties is not yet fully understood due to the difficulty of synthesis of singlephase nanoparticles. In this article we describe the features of the synthesis of single-phase particles ...
Added: May 14, 2026
Pilé I., Deng Y., Shchur L., / Series arXiv "math". 2026. No. 2604.10254.
We investigate the spatial overlap of successive spin configurations in Markov chain Monte Carlo simulations using the local Metropolis algorithm and the Svendsen-Wang and Wolff cluster algorithms. We examine the dynamics of these algorithms for two models in different universality classes: the Ising model and the Potts model with three components. The overlap of two ...
Added: April 20, 2026
Piterbarg V., Вестник Московского университета. Серия 1: Математика. Механика 2024 № 4 С. 21–25
Найдена точная асимптотика вероятности превышения высокого уровня гауссовским процессом с постоянной дисперсией, корреляционная функция которого удовлетворяет в каждой точке условию Пикандса, при этом константы в условии меняются, являясь непрерывными функциями ...
Added: June 25, 2025
Demidova O., Shchankina A., Экономика и математические методы 2025 Т. 61 № 2 С. 75–89
The article considers the interest rate channel of the monetary policy transmission of the Bank of Russia to the weighted average mortgage rate published on the website of the Bank of Russia and the "commercial" mortgage rate calculated by us less preferential loans. The main hypothesis tested in the article was that the reaction of ...
Added: December 25, 2024
Kagan M., Silkin V. M., Efremov D. V., / Series arXiv "math". 2024. No. 2411.12836.
In this study, we analyze the dielectric function of high-Tc cuprates as a function of doping level, taking into account the full energy band dispersion within the CuO2 monolayer. In addition to the conventional two-dimensional (2D) gapless plasmon mode, our findings reveal the existence of three anomalous branches within the plasmon spectrum. Two of these branches ...
Added: November 27, 2024
Influence of anisotropy on the study of critical behavior of spin models by machine learning methods
Sukhoverkhova D., Shchur L., / Series arXiv "math". 2024. No. 2410.14523.
In this paper, we applied a deep neural network to study the issue of knowledge transferability between statistical mechanics models. The following computer experiment was conducted. A convolutional neural network was trained to solve the problem of binary classification of snapshots of the Ising model's spin configuration on a two-dimensional lattice. During testing, snapshots of ...
Added: October 21, 2024
Mozolenko V., Fadeeva Marina, Shchur L., / Series arXiv "math". 2024. No. 2405.10865.
The development of new algorithms for simulations in physics is as important as the development of new analytical methods. In this paper we present a comparison of the recently developed microcanonical population annealing (MCPA) algorithm with the rather mature Wang-Landau algorithm. The comparison is performed on two cases of the Potts model exhibiting a first ...
Added: May 20, 2024
Kagan M., Аксёнов С. В., / Series Research Square "Research Suqare". 2024. No. 1.
We study different resonances (first of all of the Fano type) in the interference device formed by the Aharonov-Bohm ring with superconducting (SC) wire in the topologically nontrivial state playing a role of a bridge between top and bottom arms. We analyze Majorana modes on the ends of the SC wire and show that the collapse of the ...
Added: April 10, 2024
Ребров Я. В., Glazkov V., Murtazoev A. F. et al., / Series cond-mat "arxiv.org". 2023.
Nabokoite family compounds ACu7(TeO4)(SO4)5Cl (A=Na, K, Cs, Rb) are one of the candidates for the evasive spin-liquid state predicted for highly-frustrated square kagome lattice (SKL). Their magnetic subsystem includes SKL layers decorated by additional copper ions. All members of this family are characterized by quite high Curie-Weiss temperatures (∼80−200 K), but magnetic ordering was reported ...
Added: January 29, 2024
Yurin A., Вишняков Г. Н., Minaev V., Компьютерная оптика 2024 Т. 48 № 2 С. 225–230
Dispersion characteristics of optical glass are considered. An approach to research of dispersion characteristics of optical glass is proposed, requiring the measurement of the refractive index at only three wavelengths, which simplifies the measurement process compared with the use of the widely used Sellmeier equation. An approximation function for the refractive index of optical glass ...
Added: January 2, 2024
Shurakov A., Kaurova N., Belikov I. et al., / Series Physics "arxiv.org". 2022.
In this paper, we report on the method of nondestructive quality control that can be used in fabrication of GaAs high-speed electronics. The method relies on the surface potential mapping and enables rigid in vivo analysis of transport properties of an active electronic device incorporated into a complex integrated circuit. The study is inspired by ...
Added: September 15, 2023
Vishnyakov G., Yurin A., Minaev V. et al., Metrologia 2023 Vol. 60 No. 4 Article 045007
We present a method for measuring the refractive index (RI) and spectral characteristics of transparent triangular prisms based on the minimum deviation technique. The proposed method has been developed to automatically measure RI simultaneously for three different wavelengths to determine the spectral dependence of RI. A high precision dynamic goniometer with a He-Ne ring laser ...
Added: June 28, 2023
Safronova E., Воропаева Д. Ю., Novikova S. et al., Мембраны и мембранные технологии 2022 Т. 12 № 1 С. 47–56
В статье описано влияние природы растворителя на примере полярных протонных (вода) и апротонных (N,N-диметилформамид (ДМФА) и N,N-диметилацетамид (ДМА)) жидкостей на свойства
мембран Nafion, полученных из них методом отливки. Влагосодержание и протонная проводимость
мембран Nafion, полученных из водной дисперсии, существенно выше, чем из дисперсий в ДМФА
и ДМА, однако их механические свойства и стабильность обычно оказываются невысокими. Непродолжительная ультразвуковая ...
Added: November 25, 2022
Pugach N., Safonchik M. O., Belotelov V. et al., / Series "cond-mat". 2022. No. 2110.00369.
A detailed investigation of a superconducting spin-triplet valve is presented. This spin-valve consists of a superconducting film covering a metal with an intrinsic spiral magnetic order, which could result from competing isotropic exchanges or, if the crystal lattice breaks central symmetry, from asymmetric Dzyaloshinskii-Moriya exchange. Depending on the anisotropy, such a metal may change its ...
Added: November 16, 2022
Novikov S. V., / Series cond-mat "arxiv.org". 2022. No. 2209.14955.
Charge transport in amorphous semiconductors having spatially correlated exponential density of states (DOS) has been considered for the arbitrary behavior of the correlation function of random energies. Average carrier velocity is exactly calculated for the quasi-equilibrium (nondispersive) transport regime. For the symmetric exponential DOS with exponential tails for low and high energies and non-positive correlation ...
Added: November 1, 2022
Ikhsanov R., Mazur E., Kagan M., / Series "Working papers by Cornell University". 2022. No. 2202.01452.
At present, the task of searching for compounds with a high superconducting transition temperature is a very relevant scientific direction. Usually, the calculation of is carried out by numerically solving the system of Eliashberg equations. In this paper, a set of programs for solving this system written in various forms on the imaginary axis is ...
Added: February 4, 2022
Nikolaev V. S., Timofeev A., Physics of Plasmas 2021 Vol. 28 Article 033704
A monolayer—quasi-two-dimensional finite system—of Yukawa particles in a harmonic trap is under consideration. The effect of monolayer nonhomogeneity on dynamic properties and melting is studied. The results for two models of particle interactions are compared. The first model includes the reciprocal Yukawa potential and electrostatic harmonic trap. The second model additionally employs the point charge ...
Added: October 15, 2021
Budkov Y., Zavarzin S., Kolesnikov A. L., Journal of Physical Chemistry C 2021 Vol. 125 No. 38 P. 21151–21159
We formulate a general mean-field theory for a flat electric double layer in ionic liquids and electrolyte solutions with ions possessing static polarizability and a permanent dipole moment on a charged electrode. We establish a new analytical expression for electric double-layer differential capacitance, determining it as an absolute value of the ratio of the local ...
Added: September 16, 2021
Sanina N., Isaeva U., Utenyshev A. et al., Inorganica Chimica Acta 2021 Vol. 527 Article 120559
A new inhibitor of phosphodiesterase (PDE), i.e., nitric oxide (NO) donor, a water soluble DNIC Na[Fe(C7H5N4S)2(NO)2]⋅2.5H2O (1), has been synthesized. The structure of the new complex, its physical-chemical properties in the solid state and in solutions have been studied experimentally (X-ray analysis, IR, UV-Vis, Mossbauer spectroscopy, mass-spectrometry, and amperometry) and theoretically (quantum-chemical modeling by DFT ...
Added: September 16, 2021
Dayanova M., Патенты и лицензии. Интеллектуальные права 2020 № 3 С. 37–42
Сurrently rthere is no single approach to the protection of well-known trademarks in respect of non-uniform products. Legal acts also do not contain uniforn rules regarding the impact of the feature of homogeneity of goods on the protection of well-known trademarks. Judicial practice often encounters such violations and requires amendments to the current legislation. ...
Added: November 19, 2020
Yelizarov (Elizarov) A. A., Nazarov I., Skuridin A. et al., , in: 2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE’ 2020). MATERIALS OF THE INTERNATIONAL SCIENTIFIC AND TECHNICAL CONFERENCE. Saratov. September 24-25, 2020.: IEEE, 2020. P. 175–179.
Added: October 21, 2020
Galkina E. G., Lerman L., Zaspel C. E. et al., JETP Letters 2019 Vol. 110 No. 7 P. 481–486
The motion of domain walls in GdFeCo-type ferrimagnets near the point of compensation of sublattice spins s1 and s2, when the effects of the exchange increase in the limiting wall velocity take place, is theoretically studied. The energy E and momentum P of the wall are determined and the dispersion relation E = E(P) is derived. It is found that some walls become unstable at ...
Added: March 12, 2020
Yelizarov (Elizarov) A. A., Малинова О. Е., Сидорова Т. В. et al., Изобретения. Полезные модели. Официальный бюллетень Федеральной службы по интеллектуальной собственности, патентам и товарным знакам 2019 № 4 С. 1–2
Программа МЕТА предназначена для моделирования и расчёта характеристик планарного грибовидного
метаматериала на основе заданных геометрических параметров грибовидных ячеек типа
«мальтийский крест», электромагнитных параметрах материала элементарных структурных
единиц поверхности. Результатами являются расчетные величины эквивалентных погонных
параметров индуктивности и емкости элементарной грибовидной ячейки, зависимости
коэффициента замедления от длины волны. Программа используется для расчета
электродинамических параметров микрополосковых полосно-пропускающих и режекторных
фильтров, элементов малогабаритных антенн и ...
Added: March 28, 2019
Klein M., Clauss G., Slunyaev A., Physics of Fluids 2017 Vol. 29 P. 047103-1–047103-17
The investigation of dynamics of intense solitary wave groups of collinear surface waves is performed by means of numerical simulations of the Euler equations and laboratory experiments. The processes of solitary wave generation, reflection from a wall and collisions are considered. Steep solitary wave groups with characteristic steepness up to kAcr ~ 0.3 (where k is the ...
Added: February 14, 2019