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
25 papers · 1 filter
Boundary critical behaviour at m-axial Lifshitz points of semi-infinite systems with a surface plane perpendicular to a modulation axis
H. W. Diehl, M. A. Shpot, P. V. Prudnikov
Semi-infinite -dimensional systems with an -axial bulk Lifshitz point are considered whose ()-dimensional surface hyper-plane is oriented perpendicular to one of the …
Radiation Reaction, Renormalization and Poincaré Symmetry
Yurij Yaremko
We consider the self-action problem in classical electrodynamics of a massive point-like charge, as well as of a massless one. A consistent regularization procedure is proposed, wh…
Field theoretical analysis of adsorption of polymer chains at surfaces: Critical exponents and Scaling
Z. Usatenko
The process of adsorption on a planar repulsive, "marginal" and attractive wall of long-flexible polymer chains with excluded volume interactions is investigated. The performed sca…
Structural distortions of frustrated quantum spin lattices in high magnetic fields
Oleg Derzhko, Johannes Richter, Jörg Schulenburg
We study the stability of some strongly frustrated antiferromagnetic spin lattices in high magnetic fields against lattice distortions. In particular, we consider a spin-s anisotro…
Magnetic susceptibility of the body-centred orthorhombic LaCuO system
Kyrylo V Tabunshchyk, R J Gooding
A model Hamiltonian representing the Cu spins in LaCuO in its low-temperature body-centred orthorhombic phase, that includes both spin-orbit generated Dzyaloshinskii-Moriya…
Exact results for spatial decay of correlations in low-dimensional insulators II
Janusz Jedrzejewski, Taras Krokhmalskii
We study decay rates of one-body reduced density matrices in insulators, described by a tight-binding model, where not only an external potential but also hoppings are spatially mo…
2D Ferromagnetism in the High-Tc Analogue Cs_2AgF_4
S. E. McLain, D. A. Tennant, J. F. C. Turner +5
Although the precise mechanism of high-Tc superconductivity in the layered cuprates remains unknown, it is generally thought that strong 2D Heisenberg antiferromagnetism combined w…
Static and dynamic critical behaviour of 3d random site Ising model: different Monte Carlo algorithms
D. Ivaneyko, J. Ilnytskyi, B. Berche +1
We perform numerical simulations to study static and dynamic critical behaviour of the 3d random-site Ising model. A distinct feature of our approach is a combination of the Metrop…
Enhancement of the critical slowing down influenced by extended defects
V. Blavatska, M. Dudka, R. Folk +1
We study an influence of the quenched extended defects on the critical dynamics of the d=3-dimensional systems with m-component non-conserved order parameter (model A dynamics). Co…
Dynamics of quantum spin chains and multi-fermion excitation continua
O. Derzhko, T. Krokhmalskii, J. Stolze +1
We use the Jordan-Wigner representation to study dynamic quantities for the spin-1/2 XX chain in a transverse magnetic field. We discuss in some detail the properties of the four-f…
Structural instability of two- and three-dimensional pyrochlore spin lattices in high magnetic fields
Oleg Derzhko, Johannes Richter
We consider the quantum spin- Heisenberg antiferromagnet on the two- and three-dimensional pyrochlore lattices and examine a spin-Peierls mechanism of lowering the total e…
Dimer and trimer fluctuations in the s=1/2 transverse XX chain
Oleg Derzhko, Taras Krokhmalskii, Joachim Stolze +1
Exact results for the dynamic dimer and trimer structure factors of the one-dimensional s=1/2 XX model in a transverse magnetic field () are presented and discussed in…
Critical dynamics and effective exponents of magnets with extended impurities
V. Blavats'ka, M. Dudka, R. Folk +1
We investigate the asymptotic and effective static and dynamic critical behavior of (d=3)-dimensional magnets with quenched extended defects, correlated in dimensions (which…
Effective critical behaviour of diluted Heisenberg-like magnets
M. Dudka, R. Folk, Yu. Holovatch +1
In agreement with the Harris criterion, asymptotic critical exponents of three-dimensional (3d) Heisenberg-like magnets are not influenced by weak quenched dilution of non-magnetic…
Critical dynamics of diluted relaxational models coupled to a conserved density (diluted model C)
M. Dudka, R. Folk, Yu. Holovatch +1
We consider the influence of quenched disorder on the relaxational critical dynamics of a system characterized by a non-conserved order parameter coupled to the diffusive dynamics…
Ionic fluids: charge and density correlations near gas-liquid criticality
Oksana Patsahan, Ihor Mryglod, Jean-Michel Caillol
The correlation functions of an ionic fluid with charge and size asymmetry are studied within the framework of the random phase approximation. The results obtained for the charge-c…
Quantum Phase Transitions in Spin-1/2 Ising Chain in Regularly Alternating Transverse Field: Spin Correlation Functions
Oleg Derzhko, Taras Krokhmalskii
We consider the spin-1/2 Ising chain in a regularly alternating transverse field to examine the effects of regular alternation on the quantum phase transition inherent in the quant…
Quantum Phase Transitions in s=1/2 Ising Chain in a Regularly Alternating Transverse Field
Oleg Derzhko, Taras Krokhmalskii
We consider the ground-state properties of the s=1/2 Ising chain in a transverse field which varies regularly along the chain having a period of alternation 2. Such a model, simila…
Jordan-Wigner Approach to Dynamic Correlations in 2D Spin-1/2 Models
Oleg Derzhko, Taras Krokhmalskii
We discuss the dynamic properties of the square-lattice spin-1/2 XY model obtained using the two-dimensional Jordan-Wigner fermionization approach. We argue the relevancy of the fe…
Jordan-Wigner approach to the frustrated spin one-half XXZ chain
T. Verkholyak, A. Honecker, W. Brenig
The Jordan-Wigner transformation is applied to study the ground state properties and dimerization transition in the chain. We consider different solutions of the me…
Mott transition in the asymmetric Hubbard model at half-filling within dynamical mean-field theory
Ihor V. Stasyuk, Orest B. Hera
We apply the approximate analytic methods to the investigation of the band structure of the asymmetric Hubbard model where the chemical potentials and electron transfer parameters…
Densities of states of the Falicov-Kimball model off half filling in infinite dimensions
Ihor V. Stasyuk, Orest B. Hera
An approximate analytical scheme of the dynamical mean field theory (DMFT) is developed for the description of the electron (ion) lattice systems with Hubbard correlations within t…
Investigation of transfer coefficients for many-component dense systems of neutral and charged hard spheres
A. E. Kobryn, M. V. Tokarchuk, Y. A. Humenyuk
In present work a calculation of transfer coefficients for many-component dense gases for charged and non-charged hard spheres is carried out using the Enskog-Landau kinetic equati…
Criticality of the random-site Ising model: Metropolis, Swendsen-Wang and Wolff Monte Carlo algorithms
D. Ivaneyko, J. Ilnytskyi, B. Berche +1
We apply numerical simulations to study the criticality of the 3D Ising model with random site quenched dilution. The emphasis is given to the issues not being discussed in detail…