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## Néel temperature and thermodynamics of the half-filled 3D Hubbard model by Diagrammatic Determinant Monte Carlo

Physical Review B: Condensed Matter and Materials Physics. 2013. Vol. 87. P. 205102.

Burovskiy E., Kozik E., Troyer M., Scarola V. W.

We study the thermodynamics of the three-dimensional Hubbard model at half filling on approach to the Néel transition by means of large-scale unbiased diagrammatic determinant Monte Carlo simulations. We obtain the transition temperature in the strongly correlated regime, as well as the temperature dependence of the energy, entropy, double occupancy, and nearest-neighbor spin correlation function. Our results improve the accuracy of previous unbiased studies and present accurate benchmarks in the ongoing effort to realize the antiferromagnetic state of matter with ultracold atoms in optical lattices.

Kagan M., Mitskan V. A., Korovushkiin M. M., The European Physical Journal B 2015 Vol. 88 No. 6 P. 157-157

The effect of Coulomb interaction between Dirac fermions on the formation of the Kohn-Luttinger superconducting state in bilayer doped graphene is studied disregarding of the effect of the van der Waals potential of the substrate and impurities. The phase diagram determining the boundaries of superconductive domains with different types of symmetry of the order parameter ...

Added: July 6, 2015

Burovskiy E., Szyniszewski, M., Journal of Physics: Conference Series 2015 Vol. 592 P. 012057

We develop a systematic strong coupling approach for studying an extended t-V model with interactions of a finite range. Our technique is not based on the Bethe ansatz and is applicable to both integrable and non-integrable models. We illustrate our technique by presenting analytic results for the ground state energy (up to order 7 in t/V), the current ...

Added: September 8, 2016

S.V.Demishev, V.V.Glushkov, Lobanova I. I. et al., Scientific Reports 2016 Vol. 6 P. 22101-1-22101-7

Intrinsic phase coherence between individual topologically stable knots in spin arrangement –
skyrmions – is known to induce the crystalline-like structure in the A-phase of non-centrosymmetric
MnSi with chiral spin-orbit interaction. Here we report the experimental evidence for two types of
the skyrmion lattice (SL) inside the A-phase of MnSi, which are distinguished by different coupling to
the anisotropic ...

Added: February 16, 2017

M.Y. Kagan, Val’kov V. V., Journal of Superconductivity and Novel Magnetism 2012 Vol. 25 No. 5 P. 1379-1382

Abstract. We search for anomalous normal and superconductive behavior in the two-band Hubbard model with one narrow band. We analyze the influence of the electron– polaron effect and the Altshuler–Aronov effect on effective mass enhancement and scattering times of heavy and light components in the clean case. We find anomalous behavior of resistivity at high ...

Added: March 1, 2014

Vankov A., Kaysin B. D., Kukushkin I., Physical Review B: Condensed Matter and Materials Physics 2018 Vol. 98 P. 121412-121412

We investigate the impact of Coulomb correlations on the low-energy collective excitations in two-dimensional electron systems in the quantum Hall state ν = 2. The collective excitations are studied using inelastic light scattering in the set of MgZnO/ZnO heterostructures with high-mobility two-dimensional electrons. The study focuses on the lowest-energy collective excitations in the paramagnetic state ...

Added: November 25, 2018

V.M. Pudalov, Reznikov M., Kuntsevich A. et al., Journal of Low Temperature Physics 2015 Vol. 181 No. 3-4 P. 99-112

This paper describes recent developments in experimental techniques for thermodynamic measurements. Particularly, we focus on the derivatives of the chemical potential with respect to magnetic field and temperature. The former enables to determine the spin magnetization per electron and the latter the entropy per electron. We briefly describe recent results obtained with these techniques and ...

Added: March 14, 2016

Pudalov V. M., Gershenson M. E., Kojima H., Physical Review B: Condensed Matter and Materials Physics 2014 Vol. 90 No. 7 P. 075147-1-075147-17

We have experimentally studied the renormalized effective mass m* and Dingle temperature TD in two spin subbands with essentially different electron populations. Firstly, we found that the product m*T_D that determines the damping of quantum oscillations, to the first approximation, is the same in the majority and minority subbands even at a spin polarization degree ...

Added: March 14, 2016

Gamayun O., Lychkovskiy O., Burovskiy E. et al., Physical Review Letters 2018 Vol. 120 P. 220605-1-220605-6

We examine stationary-state properties of an impurity particle injected into a one-dimensional quantum gas. We show that the value of the impurity’s end velocity lies between zero and the speed of sound in the gas and is determined by the injection protocol. This way, the impurity’s constant motion is a dynamically emergent phenomenon whose description ...

Added: June 3, 2018

Сапронов А. А., Aad G., Glazov A., Physics Letters B 2016 Vol. 759 P. 601-621

Measurements of the W±→ℓ±ν and Z→ℓ+ℓ− production cross sections (where ℓ±=e±,μ± ) in proton–proton collisions at s=13 TeV are presented using data recorded by the ATLAS experiment at the Large Hadron Collider, corresponding to a total integrated luminosity of 81 pb −1 . The total inclusive W± -boson production cross sections times the single-lepton-flavour branching ratios ...

Added: August 7, 2018

IEEE, 2015

Added: March 16, 2015

Буров А.А., Герман А. Д., Косенко И. И., Космические исследования 2014 Т. 52 № 4 С. 307-312

The problem of planar oscillations of a pendulum with variable length suspended on the Moon’s surface is considered. It is assumed that the Earth and Moon (or, in the general case, a planet and its satellite, or an asteroid and a spacecraft) revolve around the common center of mass in unperturbed elliptical Keplerian orbits. We ...

Added: November 8, 2014

Пенза : ПГУ, 2015

В сборник трудов включены доклады юбилейного ХХ-го Международного симпозиума «Надежность и качество», проходившего с 25 по 31 мая 2015 г. в городе Пензе.
Рассмотрены актуальные проблемы теории и практики повышения надежности и качества; эффективности внедрения инновационных и информационных технологий в фундаментальных научных и прикладных исследованиях, образовательных и коммуникативных системах и средах, экономике и юриспруденции; методов и ...

Added: May 31, 2015

Norman G., Saitov I., Sartan R., Contributions to Plasma Physics 2019 Vol. 59 No. 6 P. e201800173

Warm dense hydrogen is studied in the region of fluid–fluid phase transition within
the framework of the density functional theory. We report a procedure of obtaining
metastable states and calculate the equation of state. Metastable states are diagnosed by pair correlation functions and values of conductivity. We obtain a strong
overlapping through the density of metastable and equilibrium ...

Added: October 30, 2019

Guskova M., Shchur V., Shchur L., Lobachevskii Journal of Mathematics 2020 Vol. 41 No. 6 P. 992-995

We simulate the oscillation of the viscous drop in the viscous liquid. We combine methods of chromodynamics model and Shan-Chen pseudo-potential for the immiscible fluids. We measure the frequency of the first nontrivial eigenmode using the initial ellipsoid form of the drop. Drop oscillates about the equilibrium spherical form of radius $R$. Computed frequency as ...

Added: June 2, 2020

Avetisov V. A., Иванов В. А., Мешков Д. А. et al., Письма в Журнал экспериментальной и теоретической физики 2013 Т. 98 № 4 С. 270-274

A fractal (crumpled) polymer globule, which is an unsual equilibrium state of a condenced unknotted macromolecule that is experimentally found in the DNA folding in human chromosomes, has been formed through the hierarchical collapse of a polymeric chain. The relaxation dynamics of the elasic network constructed through the contact matrix of the fractal globule has ...

Added: November 22, 2013

Kryzhanovskaya N., Maximov M., Zhukov A. et al., Journal of Lightwave Technology 2015 Vol. 33 No. 1 P. 171-175

A dense array of InGaAs quantum dots formed by MOCVD on a misoriented GaAs substrate has been used as an active medium of microdisk resonators of various types: a cylindrical disk, an undercut disk, and a suspended disk. Single-mode room temperature lasing in a 9-μm microdisk laser is demonstrated with a dominant line around 1.13 ...

Added: September 30, 2020

Prazdnichnykh A., Glazov M., Ren L. et al., Physical Review B: Condensed Matter and Materials Physics 2021 Vol. 103 No. 8 P. 085302-1-085302-12

The exciton valley dynamics in van der Waals heterostructures with transition metal dichalcogenide monolayers is driven by the long-range exchange interaction between the electron and the hole in the exciton. It couples the states active in the opposite circular polarizations resulting in the longitudinal-transverse splitting of excitons propagating in the monolayer plane. Here we study ...

Added: March 5, 2021

Burovskiy E., Cheianov V., Gamayun O. et al., Physical Review A: Atomic, Molecular, and Optical physics 2014 Vol. 89 P. 041601

We investigate the time evolution of the momentum of an impurity atom injected into a degenerate Tonks-Girardeau gas. We establish that given an initial momentum p0 the impurity relaxes to a steady state with a nonvanishing momentum p∞. The nature of the steady state is found to depend drastically on whether the masses of the impurity and the host ...

Added: September 7, 2016

Roman Moskalenko, Evgeni Burovski, Shchur L., Journal of Physics: Conference Series 2021 Vol. 1740 Article 012057

We consider a spatially distributed evolutionary game based on the Prisoner’s
Dilemma with agents arranged on a three-dimensional simple cubic lattice. Comparing to twodimensional arrangements, we find that the larger number of neighbors favors the formation of
spatial chaos: the steady state of the game is chaotic unless the payoff parameter is small. ...

Added: January 23, 2021

Молотков С. Н., Арбеков И. М., Журнал экспериментальной и теоретической физики 2017 Т. 152 № 1 С. 62-78

The proof of the security of quantum key distribution is a rather complex problem. Security is
defined in terms different from the requirements imposed on keys in classical cryptography. In quantum
cryptography, the security of keys is expressed in terms of the closeness of the quantum state of an eavesdropper
after key distribution to an ideal quantum state ...

Added: March 2, 2018

Timofeev A., Nikolaev V. S., Journal of Physics: Conference Series 2018 Vol. 946 No. 012146 P. 1-8

It is often suggested that inter-particle distance in stable dusty plasma structures decreases with cooling as a square root of neutral gas temperature. Deviations from this dependence (up to the increase at cryogenic temperatures) found in the experimental results for the pressures range 0.1–8.0 mbar and for the currents range 0.1–1.0 mA are given. Inter-particle ...

Added: October 31, 2018

Сапронов А. А., Aaboud M., Journal of High Energy Physics 2017 Vol. 2017 No. 12 P. 1-78

This paper presents a measurement of the triple-differential cross section for the Drell-Yan process Z/γ * → ℓ + ℓ − where ℓ is an electron or a muon. The measurement is performed for invariant masses of the lepton pairs, m ℓℓ , between 46 and 200 GeV using a sample of 20.2 fb−1of pp collisions data at a centre-of-mass energy of s√=8s=8 TeV collected by the ATLAS detector at the LHC ...

Added: February 26, 2018

Зеленый Л. М., Григоренко Е. Е., Малова Х. В. et al., Письма в Журнал экспериментальной и теоретической физики 2018 Т. 108 № 8 С. 586-599

В статье представлены наблюдения токовых конфигураций с магнитным широм в хвосте магнитосферы Земли спутниковым квартетом Cluster, и в солнечном ветре - спутником Wind. Показано, что в токовых конфигурациях с магнитным широм наблюдаются следующие структурные особенности: 1) утолщение токового слоя; 2) распределение плотности плазмы, асимметричное относительно плоскости слоя; 3) формирование асимметричного профиля плотности тока. Рассмотрены кинетические ...

Added: March 5, 2020

Fu H., Elena E. Grigorenko, Gabrielse C. et al., Science China Earth Sciences 2020 Vol. 63 No. 2 P. 235-256

In this paper, the particle acceleration processes around magnetotail dipolarization fronts (DFs) were reviewed. We summarize the spacecraft observations (including Cluster, THEMIS, MMS) and numerical simulations (including MHD, test-particle, hybrid, LSK, PIC) of these processes. Specifically, we (1) introduce the properties of DFs at MHD scale, ion scale, and electron scale, (2) review the properties ...

Added: March 5, 2020