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
18 papers · 1 filter
Corrections to scaling in systems with thermodynamic constraints
I. M. Mryglod, R. Folk
Using thermodynamic arguments treatment it is shown that, independently on whether Fisher renormalization changes the critical exponents near a phase transition in a constrained sy…
Molecular dynamics simulations of spin and pure liquids with preserving all the conservation laws
I. P. Omelyan, I. M. Mryglod, R. Folk
A new methodology is developed to integrate numerically the equations of motion for classical many-body systems in molecular dynamics simulations. Its distinguishable feature is th…
Ferromagnetic phase transition in a Heisenberg fluid: Monte Carlo simulations and Fisher corrections to scaling
I. M. Mryglod, I. P. Omelyan, R. Folk
The magnetic phase transition in a Heisenberg fluid is studied by means of the finite size scaling (FSS) technique. We find that even for larger systems, considered in an ensemble…
Conservation-laws-preserving algorithms for spin dynamics simulations
I. P. Omelyan, I. M. Mryglod, R. Folk
We propose new algorithms for numerical integration of the equations of motion for classical spin systems with fixed spatial site positions. The algorithms are derived on the basis…
Algorithm for molecular dynamics simulations of spin liquids
I. P. Omelyan, I. M. Mryglod, R. Folk
A new symplectic time-reversible algorithm for numerical integration of the equations of motion in magnetic liquids is proposed. It is tested and applied to molecular dynamics simu…
Strong coupling Hartree-Fock approximation in the dynamical mean-field theory
A. M. Shvaika
In the limit of infinite spatial dimensions a thermodynamically consistent theory, which is valid for arbitrary value of the Coulombic interaction (), is built for the Hu…
Surface critical behavior of random systems at the ordinary transition
M. Shpot, Z. Usatenko, Chin-Kun Hu
We calculate the surface critical exponents of the ordinary transition occuring in semi-infinite, quenched dilute Ising-like systems. This is done by applying the field theoretic a…
Local magnetic properties of periodic nonuniform spin-1/2 XX chains
Oleg Derzhko, Johannes Richter, Oles' Zaburannyi
Using the Jordan-Wigner fermionization, Green function approach and continued fractions we examine rigorously the local magnetizations and the local static susceptibilities of the…
Spin-Peierls instability in a quantum spin chain with Dzyaloshinskii-Moriya interaction
O. Derzhko, J. Richter, O. Zaburannyi
We analysed the ground state energy of some dimerized spin-1/2 transverse XX and Heisenberg chains with Dzyaloshinskii-Moriya (DM) interaction to study the influence of the latter…
Nucleation phenomena in a nonuniform atomic fluid in the electrical field
O. V. Derzhko, V. M. Myhal
The density functional approach is used to study the gas-to-liquid and liquid-to-gas nucleation phenomena in a fluid of two-level atoms in an external electrical field. The influen…
Dynamics of spin correlations in the spin-1/2 isotropic XY chain in a transverse field
O. Derzhko, T. Krokhmalskii, J. Stolze
Dynamic xx spin pair correlation functions for the isotropic spin-1/2 XY chain are calculated numerically for long open chains in the presence of a transverse magnetic field at fin…
Incommensurate Spin-Peierls Phases in the One-Dimensional Quantum Isotropic XY Model
Oleg Derzhko, Taras Krokhmalskii
Using the numerical approach for a study of the thermodynamic properties of the nonuniform one-dimensional spin-1/2 isotropic XY model in a transverse field we examine different la…
Longitudinal Field Influence on the Phase Transition and Physical Properties of the Kh2po4 Family Ferroelectrics
R. R. Levitskii, A. P. Moina, B. M. Lisnii
We verify whether the previously developed model of a KD2PO4 crystal, with the shear strain eps6 taken into account, is able to describe the longitudinal electric field E3 influenc…
Self-consistent description of simplified pseudospin-electron model
I. V. Stasyuk, A. M. Shvaika, K. V. Tabunshchyk
A method of the self-consistent calculation of the thermodynamical and correlation functions is presented. This approach is based on the GRPA (generalized random phase approximatio…
Thermodynamics of a pseudospin-electron model without correlations
I. V. Stasyuk, A. M. Shvaika, K. V. Tabunshchyk
Thermodynamics of a pseudospin-electron model without correlations is investigated. The correlation functions, the mean values of pseudospin and particle number, as well as the the…
Pseudo--epsilon expansion of six--loop renormalization group functions of an anisotropic cubic model
R. Folk, Yu. Holovatch, T. Yavors'kii
Six-loop massive scheme renormalization group functions of a d=3-dimensional cubic model (J.M. Carmona, A. Pelissetto, and E. Vicari, Phys. Rev. B vol. 61, 15136 (2000)) are recons…
Thermodynamic properties of the periodic nonuniform spin-1/2 isotropic XY chains in a transverse field
Oleg Derzhko, Johannes Richter, Oles' Zaburannyi
Using the Jordan-Wigner transformation and the continued-fraction method we calculate exactly the density of states and thermodynamic quantities of the periodic nonuniform spin-1/2…
Thermodynamics and dielectric anomalies of DMAAS and DMAGaS crystals in the phase transitions region (Landau theory approach)
I. V. Stasyuk, O. V. Velychko, Z. Czapla +1
A simple description of thermodynamics of DMAAS and DMAGaS ferroelectric crystals by means of Landau expansion is proposed. Conditions of occurrence of phase transitions are establ…