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## Dimensional crossover on multileg attractive-U Hubbard ladders

Physical Review A: Atomic, Molecular, and Optical physics. 2023. Vol. 107. No. 5. Article 053301.

Anastasia Potapova, Pilé I., Yi T., Mondaini R., Burovskiy E.

We study the ground-state properties of a polarized two-component Fermi gas on multileg attractive-U Hubbard ladders. Using exact diagonalization and density-matrix renormalization-group-method simulations, we construct grand-canonical phase diagrams for ladder widths of up to W=5 and varying perpendicular geometries, characterizing the quasi-one-dimensional regime of the dimensional crossover. We unveil a multicritical point marking the onset of partial polarization in those phase diagrams, a candidate regime of finite-momentum pairing. We compare our findings with recent experimental and theoretical studies of quasi-one-dimensional polarized Fermi gases.

М.Ю. Каган, Аксенов С. В., Турлапов А. В. et al., Письма в Журнал экспериментальной и теоретической физики 2023 Т. 117 № 9-10 С. 754-764

В обзоре рассмотрен ряд систем, описываемых неоднородной (пространственно-разделённой) фермибозе смесью, со сверхпроводящими кластерами или каплями параметра порядка в матрице расспаренных
нормальных состояний. Пространственно-разделённая ферми-бозе смесь реализуется в сверхпроводящих
оксидах висмута BaKBiO3. Капли параметра порядка могут возникать в тонких плёнках грязного металла, описываемых 2D моделью Хаббарда малой электронной плотности с сильным притяжением и
сильным диагональным беспорядком. Бозе-конденсатные капли формируются ...

Added: May 12, 2023

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

Burovskiy E., Kozik E., Troyer M. et al., Physical Review B: Condensed Matter and Materials Physics 2013 Vol. 87 P. 205102

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. ...

Added: September 7, 2016

Teixeira Saraiva T., Vagov A., Cavalcanti P. J. et al., Physical Review Letters 2020 Vol. 125 No. 21 Article 217003

It is well known that superconductivity in quasi-one-dimensional (Q1D) materials is hindered by large fluctuations of the order parameter. They reduce the critical temperature and can even destroy the superconductivity altogether. Here it is demonstrated that the situation changes dramatically when a Q1D pair condensate is coupled to a higher-dimensional stable one, as in recently ...

Added: November 19, 2020

Марычев П. М., Водолазов Д. Ю., Journal of Physics: Condensed Matter 2021 Vol. 33 No. 38 P. 385301

We have calculated kinetic inductance Lk of a thin superconductor/ferromagnet/normal metal strip in an in-plane Fulde–Ferrell (FF) state. We consider range of parameters when FF state appears at temperature TFF < Tc (Tc is a transition temperature to superconducting state) when the paramagnetic response of FN layers overcomes the diamagnetic response of S layer. We ...

Added: January 12, 2023

Peshcherenko N. S., Ioselevich A., Physical Review B: Condensed Matter and Materials Physics 2020 Vol. 102 P. 134208-1-134208-18

Clean quasi-one-dimensional systems demonstrate Van Hove singularities in the density of states ν and resistivity ρ, occurring when the Fermi level crosses the bottom of some transversal quantization subband. However, taking the scattering on impurities into the account should smear the singularities. As we have shown in our previous work [Phys. Rev. B 99, 035414 ...

Added: November 12, 2020

Марычев П. М., Водолазов Д. Ю., Пластовец В. Д., Physical Review B: Condensed Matter and Materials Physics 2020 Vol. 102 No. 5 P. 054519

We theoretically study the magnetic response of a superconductor/ferromagnet/normal-metal strip in an in-plane Fulde-Ferrell (FF) state. We show that unlike an ordinary superconducting strip, the FF strip can be switched from diamagnetic to paramagnetic and then back to a diamagnetic state by increasing the perpendicular magnetic field. Being in a paramagnetic state, the FF strip ...

Added: January 12, 2023

Ioselevich A., Peshcherenko N. S., JETP Letters 2021 Vol. 114 P. 41-42

In a quasi-one-dimensional system (a tube) with low concentration of defects the resistivity has peaks (van-Hove singularities) as a function of Fermi-energy. We show that due to non-Born scattering effects a deep narrow gap should appear just in the center of each peak. The resistivity at the bottom of a gap is dominated by scattering at ...

Added: October 17, 2021

Ружицкая Д. Д., САМОЙЛЕНКО А. А., Иванов А. Д. et al., Optoelectronics, Instrumentation and Data Processing 2017 Vol. 54 No. 1 P. 1-8

This paper presents an algorithm for processing the transmission spectra of whisperinggallery optical microcavities for use as a nanoparticle detector. The algorithm is based on the broadening of the microcavity resonance curve during precipitation of nanoparticles on the microcavity surface. Experimental results on the detection of particles are compared with Langmuir adsorption theory. The contribution ...

Added: May 25, 2018

Загорский Д. Л., Долуденко И. М., Каневский В. М. et al., Известия РАН. Серия физическая 2021 Т. 85 № 8 С. 1088-1094

FeCo and FeNi alloyed nanowires (NW) were obtained by the matrix synthesis method: the effect of the
growth voltage and the effect of using a reference electrode were studied. It is shown that the composition of
FeNi nanowires strongly depends on the growth potential (with its increase, the bcc structure is changing into
fcc), and it is also ...

Added: November 12, 2021

Panina I., Balandin S., Tsarev A. et al., International Journal of Molecular Sciences 2023 Vol. 24 No. 2 P. 1

To date, a number of lantibiotics have been shown to use lipid II — a highly conserved peptidoglycan precursor in the cytoplasmic membrane of bacteria — as their molecular target. The α-component (Lchα) of the two-component lantibiotic lichenicidin (Lchα), previously isolated from the Bacillus licheniformis VK21 strain, seems to contain two putative lipid II binding ...

Added: February 21, 2023

М. : National Instruments Russia, 2017

Содержание сборника составляют доклады с результатами оригинальных исследований и технических решений, ранее не публиковавшиеся. Мы надеемся, что предлагаемый сборник окажется полезным для специалистов, работающих в различных областях науки и техники, для широкого круга преподавателей, аспирантов и студентов ВУЗов, а также для преподавателей средних школ и технических колледжей. ...

Added: May 10, 2017

Aaij R., Abdelmotteleb A. S., Abellan Beteta C. et al., The European Physical Journal C - Particles and Fields 2023 Vol. 83 Article 543

https://link.springer.com/article/10.1140/epjc/s10052-023-11673-x#Abs1 ...

Added: December 4, 2023

Katushkina O. A., Quemerais E., Izmodenov V.V. et al., JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 2017 Vol. 122 No. 11 P. 10921-10937

In this work, we present for the first time the Lyman α intensities measured by Voyager 1/UVS in 2003–2014 (at 90–130 AU from the Sun). During this period Voyager 1 measured the Lyman α emission in the outer heliosphere at an almost fixed direction close to the upwind (i.e.“ toward the interstellar flow). The data show an unexpected behavior in 2003–2009: the ...

Added: January 26, 2018

Alfimov M., Litvinov A., Journal of High Energy Physics 2022 No. 01 Article 43

We study regularization scheme dependence of beta-function for sigma models with two-dimensional target space. Working within four-loop approximation, we conjecture the scheme in which the beta-function retains only two tensor structures up to certain terms containing zeta_3. Using this scheme, we provide explicit solutions to RG flow equation corresponding to Yang-Baxter- and lambda-deformed SU(2)/U(1) sigma ...

Added: February 1, 2022

M. : Faculty of Physics, MSU, 2017

The Low Temperature Physics Conference is an international event held every three years, under the auspices of the IUPAP through its Commission C5 on Low Temperature Physics. The aim of these conferences is to exchange information and views among the members of the international scientific community in the general field of Low Temperature Physics. It ...

Added: October 1, 2017

Kolokolov I., Lebedev V., Sizov G. A., Journal of Experimental and Theoretical Physics 2011 Vol. 140 No. 2 P. 387-400

We analyze magnetic kinematic dynamo in a conducting fluid where the stationary shear flow is accompanied by relatively weak random velocity fluctuations. The diffusionless and diffusion regimes are described. The growth rates of the magnetic field moments are related to the statistical characteristics of the flow describing divergence of the Lagrangian trajectories. The magnetic field ...

Added: February 2, 2017

Kuzovnikov M., Antonov Vladimir E., Kulakov V. et al., PHYSICAL REVIEW MATERIALS 2023 Vol. 7 No. 2 Article 024803

Zirconium trihydride and, for comparison, trideuteride with hexagonal close-packed (hcp) metal lattices
were synthesized at a hydrogen/deuterium pressure of 9 GPa and a temperature of 873 K using toroid-type
high-pressure chambers. After a rapid cooling (quenching) to 100 K and lowering the pressure to atmospheric,
the quenched sample was removed from the chamber and studied by hot extraction ...

Added: February 13, 2024

I.A. Cohn, S.V. Zaitsev-Zotov, Physical Review B: Condensed Matter and Materials Physics 2023 Vol. 108 No. 11 Article 115124

We demonstrate that magnetoresistance of creeping charge-density waves in the quasi-one-dimensional
conductor o-TaS 3 changes its character from a negative parabolic at T 10 K, where it obeys the 1/T 2 law
to a weakly temperature-dependent negative nearly linear one at lower temperatures. The dominant contribution into the negative parabolic magnetoresistance comes from magnetic field induced ...

Added: October 25, 2023

Aaij R., Abdelmotteleb A. S., Abellán Beteta C. et al., Physical Review Letters 2022 Vol. 129 No. 9 Article 091801

The first study of the angular distribution of μþμ− pairs produced in the forward rapidity region via the Drell-Yan reaction pp → γ=Z þ X → lþl− þ X is presented, using data collected with the LHCb detector at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5.1 fb−1. The coefficients ...

Added: December 29, 2022

Orekhov M., Russian Journal of Physical Chemistry A 2021 Vol. 95 P. 2059-2064

Molecular dynamic models are created for properties of bivalent ions in organic solvents. It is shown that molecules of the considered solvents bound to ions via oxygen atoms. A theoretical model is developed that describes the ion coordination number. The coordination number in this model is determined by the ratio between the sizes of the ...

Added: October 14, 2021

Kuzmichev S. A., Kuzmicheva T. E., Tchesnokov S. N. et al., Journal of Superconductivity and Novel Magnetism 2016 Vol. 29 No. 4 P. 1111-1116

We present temperature dependences of the large and the small superconducting gaps measured directly by SnS-Andreev spectroscopy in various Fe-based superconductors and MgB2. The experimental L,S(T ) are wellfitted with a two-gap model based on Moskalenko and Suhl system of equations (supplemented with a BCS integral renormalization). From the fitting procedure, we estimate the key ...

Added: March 19, 2016

Min Namkung, Younghun K., Scientific Reports 2018 Vol. 8 No. 1 P. 16915-1-16915-18

Sequential state discrimination is a strategy for quantum state discrimination of a sender’s quantum
states when N receivers are separately located. In this report, we propose optical designs that can
perform sequential state discrimination of two coherent states. For this purpose, we consider not
only binary phase-shifting-key (BPSK) signals but also general coherent states, with arbitrary prior
probabilities. Since ...

Added: November 16, 2020

49606783, Russian Journal of Mathematical Physics 2019 Vol. 26 No. 2 P. 168-173

The parameters of unstable short-living isotopes are studied from
the mathematical point of view. The values of the chemical potential
and activity parameters that determine the neutron halo arising when
the neutron separates from the nucleus of an unstable isotope are
calculated. The analogy between nuclear physics and economics is
considered from the point of view of such parameters as ...

Added: August 25, 2019