77 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Russian Academy of SciencesRU30 papers
- Prokhorov General Physics InstituteRU9 papers
- M. Akmullah Bashkir State Pedagogical UniversityRU8 papers
- University of BayreuthDE8 papers
- Bashkir State UniversityRU7 papers
- Institute of Mathematics with Computer CenterRU5 papers
- North Bengal UniversityIN5 papers
- Institute for Theoretical and Experimental PhysicsRU4 papers
- Kurchatov InstituteRU4 papers
- National Research Nuclear University MEPhIRU4 papers
- St Petersburg UniversityRU3 papers
- Ufa State Aviation Technical UniversityRU3 papers
37 papers
Einstein Frame Regularization of the JNW Spacetime: From Brans-Dicke Singularity to Ellis Wormhole
A. Bhattacharya, R. N. Izmailov, R. Kh. Karimov
We propose a novel way to achieve the regularization of the JNW globally naked singularity sourced by the canonical Einstein minimally coupled scalar field (EMS). The key idea is t…
Bondi Accretion onto a Damour-Solodukhin Wormhole
R. M. Yusupova, R. Kh. Karimov, A. Bhattacharya
The Damour-Solodukhin wormhole (hereinafter DSWH) is known to mimic Schwarzschild black hole (hereinafter SBH) horizon in some properties. To act as a mimicker, the DSWH parameter…
Gravitational time advancement effect in Bumblebee gravity for Earth bound systems
G. Y. Tuleganova, R. Kh. Karimov, R. N. Izmailov +3
This paper is a novel application of the new effect of gravitational time advancement or \textit{negative} time delay, first predicted for static black holes (spin ), that can…
On a Class of Harko-Kovacs-Lobo Wormholes
R. Kh. Karimov, R. N. Izmailov, K. K. Nandi
The Harko, Kovács, and Lobo wormhole (HKLWH) metric contains two free parameters: one is the wormhole throat , and the other is a dimensionless deviation parameter with…
Can a regular black hole be observationally distinguished from singular black holes as spinning lens partner in PSR-BH binaries?
G. Y. Tuleganova, R. Kh. Karimov, R. N. Izmailov +1
To answer the question posed in the title, we consider a novel diagnostic, viz., the difference in the times of arrival (TOA) at the observer of two light rays that simultaneously…
Terrestrial Sagnac delay in scalar-tensor-vector-gravity
R. Kh. Karimov, R. N. Izmailov, K. K. Nandi
The scalar-tensor-vector-gravity (STVG), a prototype of modified gravity developed by Moffat, can correctly explain galaxy rotation curves, cluster dynamics, Bullet Cluster phenome…
Accretion Flow onto Ellis-Bronnikov Wormhole
R. M. Yusupova, R. Kh. Karimov, R. N. Izmailov +1
Study of accretion onto wormholes is rather rare compared to that onto black holes. In this paper, we consider accretion flow of cosmological dark energy modeled by barotropic flui…
Thin accretion disks around a Schwarzschild acoustic black hole
R. M. Yusupova, R. N. Izmailov, R. Kh. Karimov
We investigate the properties of a thin accretion disk in the Novikov-Thorne framework around a Schwarzschild acoustic black hole characterized by a nonzero background fluid four-v…
Spin texture tunability in MnGeBiTe through varying Ge Concentration
A. M. Shikin, D. A. Estyunin, N. L. Zaitsev +10
The spin-resolved dispersion dependencies for the topological insulator MnGeBiTe in the path of the Brillouin zone were studied b…
Micromagnetic textures in exchange coupled-ferromagnetic multiferroic films
Z. V. Gareeva, N. V. Shulga, A. K. Zvezdin
The development of new computing technologies has given a new stimulus in the study of multiferroics. The use of multiferroics allows the realization of competitive energy efficien…
Interplay between exchange split Dirac and Rashba-type surface states in MnBiTe/BiTeI interface
N. L. Zaitsev, I. P. Rusinov, T. V. Menshchikova +1
Based on the ab initio calculations, we study the electronic structure of the BiTeI/MnBi2Te4 heterostructure interface composed of the anti-ferromagnetic topological insulator MnBi…
Symmetry analysis of magnetoelectric effects in perovskite-based multiferroics
Zukhra Gareeva, Anatoly Zvezdin, Konstantin Zvezdin +1
In this article, we perform the symmetry analysis of perovskite-based multiferroics: bismuth ferrite (BiFeO3)-like, orthochromites (RCrO3), and Ruddlesden-Popper perovskites (Ca3Mn…
Rotobreathers in a chain of coupled elastic rotators
Alexander V. Savin, Ilsiya R. Sunagatova, Sergey V. Dmitriev
Rotobreathers in the chain of coupled linearly elastic rotators are analyzed. Each rotator is a particle connected by a massless elastic rod with a frictionless pivot; it has two d…
Sample-dependent Dirac point gap in MnBiTe and its response to the applied surface charge: a combined photoemission and ab initio study
A. M. Shikin, D. A. Estyunin, N. L. Zaitsev +16
Recently discovered intrinsic antiferromagnetic topological insulator MnBiTe presents an exciting platform for realization of the quantum anomalous Hall effect and a number…
Anomalies in the dynamics of ferrimagnets near the angular momentum compensation point
A. K. Zvezdin, Z. V. Gareeva, K. A. Zvezdin
In this paper, we elaborate analytical theory of domain wall dynamics close to the angular momentum compensation point based on non-linear dynamic equations derived from the effect…
Multiferroic order parameters in rhombic antiferromagnets. RCrO
A. K. Zvezdin, Z. V. Gareeva, X. M. Chen
In this paper, we explore magneteoelectricity of rare earth orthochromites from the symmetry point of view. We determine the principal structural order parameters and find their co…
Equilibration of sinusoidal modulation of temperature in linear and nonlinear chains
Elena A. Korznikova, Vitaly A. Kuzkin, Anton M. Krivtsov +4
The equilibration of sinusoidally modulated distribution of the kinetic temperature is analyzed in the -Fermi-Pasta-Ulam-Tsingou chain with different degrees of nonlinearity and…
Collision of kinks free of the Peierls-Nabarro barrier in the regime of strong discreteness
Alidad Askari, Aliakbar Moradi Marjaneh, Zhanna G. Rakhmatullina +5
The two major effects observed in collisions of the continuum kinks are (i) the existence of critical collision velocity above which the kinks always emerge from the collisio…
Vacuum Brans-Dicke theory in the Jordan and Einstein frames: can they be distinguished by lensing?
R. N. Izmailov, R. Kh. Karimov, A. A. Potapov +1
Vacuum Brans-Dicke theory can be self-consistently described in two frames, the Jordan frame (JF) and the conformally rescaled Einstein frame (EF), the transformations providing an…
Effect of discrete breathers on macroscopic properties of the Fermi-Pasta-Ulam chain
Elena A. Korznikova, Alina Y. Morkina, Mohit Singh +5
The effect of discrete breathers (DBs) on macroscopic properties of the Fermi-Pasta-Ulam chain with symmetric and asymmetric potentials is investigated. The total to kinetic energy…
Effect of discrete breathers on the specific heat of a nonlinear chain
Mohit Singh, Alina Y. Morkina, Elena A. Korznikova +6
A nonlinear chain with six-order polynomial on-site potential is used to analyze the evolution of the total to kinetic energy ratio during development of modulational instability o…
Influence of dielectric layers on estimates of diffusion coefficients and concentrations of ions from impedance spectroscopy
Maxim V. Khazimullin, Yuriy A. Lebedev
We present the analysis of the impedance spectra for a binary electrolyte confined between blocking electrodes with dielectric layers. An expression for the impedance is derived fr…
Structure and vibrational properties of the PTCDA/Ag(111) interface: Bilayer vs. monolayer
N. L. Zaitsev, P. Jakob, R. Tonner
The structural and vibrational properties of metal-organic interfaces have been examined by means of infrared (IR) absorption spectroscopy and density functional theory (DFT) with…
Spatiotemporal complexity of electroconvection patterns in nematic liquid crystals
Alexei Krekhov, Bernd Dressel, Werner Pesch +2
We investigate a number of complex patterns driven by the electro-convection instability in a planarly aligned layer of a nematic liquid crystal. They are traced back to various se…