2.2k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- National University of Science and TechnologyRU181 papers
- Moscow Institute of Physics and TechnologyRU162 papers
- Lomonosov Moscow State UniversityRU153 papers
- P.N. Lebedev Physical Institute of the Russian Academy of SciencesRU98 papers
- Centre National de la Recherche ScientifiqueFR78 papers
- Russian Academy of SciencesRU70 papers
- Karlsruhe Institute of TechnologyDE67 papers
- Steklov Mathematical InstituteRU52 papers
- Skolkovo Institute of Science and TechnologyRU51 papers
- National Research University Higher School of EconomicsRU50 papers
- University of AmsterdamNL48 papers
- Université Paris-SaclayFR36 papers
47 papers · 1 filter
Recursion method for quench dynamics: strengths and limitations
Ilya Shirokov, Viacheslav Khrushchev, Filipp Uskov +3
The recursion method, which solves coupled Heisenberg equations in a Lanczos operator basis, has recently emerged as a powerful nonperturbative tool for computing dynamical correla…
Resistive Anomaly near a Ferromagnetic Phase Transition: A Classical Memory Effect
Dmitrii L. Maslov, Vladimir I. Yudson, Cristian D. Batista
We investigate resistive anomalies in metals near ferromagnetic phase transitions, focusing on the role of long-range critical fluctuations. Our analysis reveals that diffusive mot…
Inhomogeneous Evolution of a Dense Ensemble of Optically Pumped Excitons to a Charge Transfer State
Natasha Kirova, Serguei Brazovskii
Phase transformations induced by short optical pulses are mainstream in studies on the dynamics of cooperative electronic states. We present a semi-phenomenological modeling of spa…
Fermionic transport through a driven quantum point contact: breakdown of Floquet thermalization beyond a critical driving frequency
Ivan V. Dudinets, Oleg Lychkovskiy
We study a quantum system that consists of two fermionic chains coupled by a driven quantum point contact (QPC). The QPC contains a bond with a periodically varying tunneling ampli…
Orbital Magnetic Field Driven Metal-Insulator Transition in Strongly Correlated Electron Systems
Georg Rohringer, Anton A. Markov
We study the effects of an orbital magnetic field on the Mott metal-insulator transition in the Hubbard-Hofstadter model. We demonstrate that sufficiently large magnetic fields ind…
Adiabatic eigenstate deformations and weak integrability breaking of Heisenberg chain
Pavel Orlov, Anastasiia Tiutiakina, Rustem Sharipov +3
We consider the spin-1/2 XXX chain weakly perturbed away from integrability by an isotropic next-to-nearest neighbor exchange interaction. Recently, it was conjectured that this mo…
Effects of a single impurity in a Luttinger liquid with spin-orbit coupling
M. S. Bahovadinov, S. I. Matveenko
In quasi-1D conducting nanowires spin-orbit coupling destructs spin-charge separation, intrinsic to Tomonaga-Luttinger liquid (TLL). We study renormalization of a single scattering…
Quasi-conserved charges in the perturbed spin-1/2 XXX model
Denis V. Kurlov, Savvas Malikis, Vladimir Gritsev
We consider the isotropic spin- Heisenberg spin chain weakly perturbed by a local translationally- and -invariant perturbation. Starting from the local integrals of mot…
Fluctuations analysis of the spin susceptibility: Néel ordering revisited in dynamical mean field theory
Lorenzo Del Re, Georg Rohringer
In this paper, we revisit the antiferromagnetic (AF) phase diagram of the single-band three-dimensional half-filled Hubbard model on a simple cubic lattice studied within the dynam…
Fluctuating local field approach to free energy of 1D molecules with strong collective electronic correlations
Yana S. Lyakhova, Evgeny A. Stepanov, Alexey N. Rubtsov
The impact of leading collective electronic fluctuations on a free energy of a prototype 1D model for molecular systems is considered within the recently developed Fluctuating Loca…
Pair density wave solution for a self-consistent model
S. I. Matveenko, S. I. Mukhin
In the self-consistent approximation for the two-dimensional mean-field model we found an analytic solution for the ground state with a coexisting d-wave symmetric bond ordered pai…
Néel domain wall as a tunable filter for optically excited magnetostatic waves
N. E. Khokhlov, A. E. Khramova, Ia. A. Filatov +3
We present a concept of a tunable optical excitation of spin waves and filtering their spectra in a ferromagnetic film with 180 Néel domain wall. We show by means of micr…
Proton fraction in neutron star matter: Dynamical mean-field approach
Maxim Velikanov, Alexey N. Rubtsov, Boris Krippa
Dynamical mean field theory (DMFT) is used to study neutron matter, both with and without admixture of the proton fraction. The system is approximated by the lattice Habbard model.…
Local marker for interacting topological insulators
Anton Markov, Alexey Rubtsov
Topological states of matter were first introduced for non-interacting fermions on an infinite uniform lattice. Since then, substantial effort has been made to generalize these con…
Dual fermion method as a prototype of generic reference-system approach for correlated fermions
Sergey Brener, Evgeny A. Stepanov, Alexey N. Rubtsov +2
We present a purely diagrammatic derivation of the dual fermion scheme [Phys. Rev. B 77 (2008) 033101]. The derivation makes particularly clear that a similar scheme can be develop…
Quasiparticle and Nonquasiparticle Transport in Doped Quantum Paraelectrics
Abhishek Kumar, Vladimir I. Yudson, Dmitrii L. Maslov
Charge transport in doped quantum paralectrics (QPs) presents a number of puzzles, including a pronounced regime in the resistivity. We analyze charge transport in a QP withi…
Collective magnetic fluctuations in Hubbard plaquettes captured by fluctuating local field method
Alexey N. Rubtsov, Evgeny A. Stepanov, Alexander I. Lichtenstein
We establish a way to handle main collective fluctuations in correlated quantum systems based on a Fluctuation Local Field concept. This technique goes beyond standard mean-field a…
Dual parquet scheme for the two-dimensional Hubbard model: modelling low-energy physics of high- cuprates with high momentum resolution
G. V. Astretsov, G. Rohringer, A. N. Rubtsov
We present a new method to treat the two-dimensional (2D) Hubbard model for parameter regimes which are relevant for the physics of the high- superconducting cuprates. Unlike…
Fate of a topological invariant for correlated lattice electrons at finite temperature
A. A. Markov, G. Rohringer, A. N. Rubtsov
Electrons on a two-dimensional (2) lattice which is exposed to a strong uniform magnetic field show intriguing physical phenomena. The spectrum of such systems exhibits a comple…
Exact real-time dynamics of single-impurity Anderson model from a single-spin hybridization-expansion
Patryk Kubiczek, Alexey N. Rubtsov, Alexander I. Lichtenstein
In this work we introduce a modified real-time continuous-time hybridization-expansion quantum Monte Carlo solver for a time-dependent single-orbital Anderson impurity model: CT-1/…
Dual Boson approach with instantaneous interaction
L. Peters, E. G. C. P. van Loon, A. N. Rubtsov +3
The Dual Boson approach to strongly correlated systems generally involves a dynamic (frequency-dependent) interaction in the auxiliary impurity model. In this work, we explore the…
Quantum spin fluctuations and evolution of electronic structure in cuprates
E. A. Stepanov, L. Peters, I. S. Krivenko +3
Correlation effects in CuO layers give rise to a complicated landscape of collective excitations in high-T cuprates. Their description requires an accurate account fo…
Analytical investigation of singularities in two-particle irreducible vertex functions of the Hubbard atom
Patrik Thunström, Olle Gunnarsson, Sergio Ciuchi +1
Two-particle generalized susceptibilities and their irreducible vertex functions play a prominent role in the quantum many-body theory for correlated electron systems. They act as…
Efficient Bethe-Salpeter equations' treatment in dynamical mean-field theory
Agnese Tagliavini, Stefan Hummel, Nils Wentzell +3
We present here two alternative schemes designed to correct the high-frequency truncation errors in the numerical treatment of the Bethe-Salpeter equations. The schemes are applica…