920 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- National Academy of Sciences of UkraineUA354 papers
- Lviv UniversityUA86 papers
- Coventry UniversityGB63 papers
- Lviv Polytechnic National UniversityUA61 papers
- Johannes Kepler University of LinzAT57 papers
- Centre National de la Recherche ScientifiqueFR55 papers
- Otto-von-Guericke-Universität MagdeburgDE42 papers
- University of Pavol Jozef ŠafárikSK27 papers
- Université de LorraineFR26 papers
- Georgetown UniversityUS21 papers
- Max Planck Institute for the Physics of Complex SystemsDE20 papers
- Institute of Physical ChemistryPL16 papers
127 papers · 1 filter
Manipulation of electromagnetic wave propagation in quantum-spin-chain medium
Taras Krokhmalskii, Taras Verkholyak, Ostap Baran +3
We consider a simple model of one-dimensional magnetic crystal and examine the propagation of an electromagnetic wave through such a medium. Calculating the dispersion relation ${\…
Quantum Heisenberg antiferromagnet in a field on the Tasaki square lattice
Maksym Parymuda, Taras Krokhmalskii, Oleg Derzhko
We consider the Heisenberg antiferromagnet on the Tasaki square lattice (flat-band spin system) and study its low-temperature thermodynamics around the saturation magnetic…
Out-of-time ordered correlation functions for the localized electrons in the Falicov-Kimball model
A. M. Shvaika, J. K. Freericks
We provide an exact evaluation of the out-of-time correlation (OTOC) functions for the localized -particle states in the Falicov-Kimball model within dynamical mean-field theory…
Three-dimensional unfrustrated and frustrated quantum Heisenberg magnets. Specific heat study
T. Krokhmalskii, T. Hutak, O. Derzhko
We examine the Heisenberg magnet on four three-dimensional lattices - simple-cubic, diamond, pyrochlore, and hyperkagome ones - for ferromagnetic and antiferromagnetic sign…
Thermodynamics of the hyperkagome-lattice Heisenberg ferromagnet
Maksym Parymuda, Taras Krokhmalskii, Oleg Derzhko
The hyperkagome-lattice Heisenberg ferromagnet is studied by means of the linear spin-wave theory, the double-time temperature Green's function method, high-temperature exp…
Longitudinal magnon transport properties in the easy-axis XXZ Heisenberg ferromagnet on the face-centered cubic lattice
M. R. Parymuda
We present a detailed investigation of longitudinal magneto-thermal transport in the ferromagnetic XXZ model with easy-axis exchange anisotropy () on a face-centered c…
The Luttinger Count is the Homotopy not the Physical Charge: Generalized Anomalies Characterize Non-Fermi Liquids
Gabriele La Nave, Jinchao Zhao, Philip W. Phillips
We show that the Luttinger-Ward functional can be formulated as an operator insertion in the path integral and hence can be thought of as a generalized symmetry. The key result is…
Expressivity of determinantal ansatzes for neural network wave functions
Ni Zhan, William A. Wheeler, Gil Goldshlager +3
Neural network wave functions have shown promise as a way to achieve high accuracy on the many-body quantum problem. These wave functions most commonly use a determinant or sum of…
The finite-difference parquet method: Enhanced electron-paramagnon scattering opens a pseudogap
Jae-Mo Lihm, Dominik Kiese, Seung-Sup B. Lee +1
We present the finite-difference parquet method that greatly improves the applicability and accuracy of two-particle correlation approaches to interacting electron systems. This me…
Frustrated kagome-lattice bilayer quantum Heisenberg antiferromagnet
Dmytro Yaremchuk, Taras Hutak, Vasyl Baliha +4
We consider the antiferromagnetic Heisenberg model on a frustrated kagome-lattice bilayer with strong nearest-neighbor interlayer coupling and examine its low-temperature m…
Thermodynamic properties of the macroscopically degenerate tetramer-dimer phase of the spin-1/2 Heisenberg model on the diamond-decorated square lattice
Katarina Karlova, Andreas Honecker, Nils Caci +3
The spin-1/2 Heisenberg antiferromagnet on the diamond-decorated square lattice in the presence of a magnetic field displays various quantum phases including the Lieb-Mattis ferrim…
Unusual low-temperature behavior in the half-filled band of the one-dimensional extended Hubbard model in atomic limit
Onofre Rojas, S. M. de Souza, J. Torrico +4
Recently, a kind of finite-temperature pseudo-transition was observed in several quasi-one-dimensional models. In this work, we consider a genuine one-dimensional extended Hubbard…
Thermodynamics of the hyperkagome-lattice Heisenberg antiferromagnet
Taras Hutak, Taras Krokhmalskii, Jürgen Schnack +2
The hyperkagome-lattice Heisenberg antiferromagnet allows to study the interplay of geometrical frustration and quantum as well as thermal fluctuations in three dimensions.…
Spin-half Heisenberg antiferromagnet on a symmetric sawtooth chain: Rotation-invariant Green's functions and high-temperature series
Taras Hutak, Taras Krokhmalskii, Oleg Derzhko +1
We apply the rotation-invariant Green's function method to study the finite-temperature properties of a sawtooth-chain (also called -chain) antiferromagnetic Heisenber…
Phases of the spin-1/2 Heisenberg antiferromagnet on the diamond-decorated square lattice in a magnetic field
Nils Caci, Katarina Karlova, Taras Verkholyak +3
The spin-1/2 Heisenberg antiferromagnet on the frustrated diamond-decorated square lattice is known to feature various zero-field ground-state phases, consisting of extended monome…
Quantum Heisenberg model on a sawtooth-chain lattice: Rotation-invariant Green's function method
Taras Hutak, Taras Krokhmalskii, Oleg Derzhko +1
We apply the rotation-invariant Green's function method (RGM) to study the spin Heisenberg model on a one-dimensional sawtooth lattice, which has two nonequivalent sites in…
Thermodynamics of the spin-half square-kagome lattice antiferromagnet
Johannes Richter, Oleg Derzhko, Jürgen Schnack
Over the last decade, the interest in the spin- Heisenberg antiferromagnet (HAF) on the square-kagome (also called shuriken) lattice has been growing as a model system of quan…
Tunneling maps of interacting electrons in real time: anomalous tunneling in quantum point-contacts beyond the steady state regime
Taras Hutak, Gleb Skorobagatko
Strongly correlated transport of interacting electrons through the one-dimensional tunnel contact is considered within the Luttinger liquid model of one-dimensional electrodes on a…
Fractional magnetization plateaux of a spin-1/2 Heisenberg model on the Shastry-Sutherland lattice: effect of quantum XY interdimer coupling
T. Verkholyak, J. Strecka
Spin-1/2 Heisenberg model on the Shastry-Sutherland lattice is considered within the many-body perturbation theory developed from the exactly solved spin-1/2 Ising-Heisenberg model…
Insights into nature of a magnetization plateau of 3-4 coordination polymer [DyCu] from a spin-1/2 Ising-Heisenberg orthogonal-dimer chain
J. Strečka, L. Gálisová, T. Verkholyak
The ground state and magnetization process of an exactly solved spin- Ising-Heisenberg orthogonal-dimer chain with two different gyromagnetic factors of the Ising and Heisenbe…
Flat-band physics in the spin-1/2 sawtooth chain
Oleg Derzhko, Jürgen Schnack, D. V. Dmitriev +2
We consider the strongly anisotropic spin-1/2 model on the sawtooth-chain lattice with ferromagnetic longitudinal interaction and aniferromagnetic transversal int…
Adapting Planck's route to investigate the thermodynamics of the spin-half pyrochlore Heisenberg antiferromagnet
Oleg Derzhko, Taras Hutak, Taras Krokhmalskii +2
The spin-half pyrochlore Heisenberg antiferromagnet (PHAF) is one of the most challenging problems in the field of highly frustrated quantum magnetism. Stimulated by the seminal pa…
Spin-1/2 chain in a transverse field with regularly alternating -factors: Static and dynamic properties
Taras Krokhmalskii, Taras Verkholyak, Ostap Baran +2
We consider the spin-1/2 isotropic chain in an external magnetic field directed along axis with periodically varying -factors. To reveal the effects of regularly altern…
Bose-Fermi-Hubbard model in the truncated Hilbert space limit
V. O. Krasnov, I. V. Stasyuk
It is shown that in the Bose-Fermi-Hubbard model which is used for a description of the ultracold atomic boson-fermion mixture in the optical lattice, the r…