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
15 papers · 1 filter
Quantum phase transitions in alternating transverse Ising chains
Oleg Derzhko
This chapter is devoted to a discussion of quantum phase transitions in regularly alternating spin-1/2 Ising chain in a transverse field. After recalling some generally-known topic…
Theory of Rochelle salt: beyond the Mitsui model
I. V. Stasyuk, O. V. Velychko
A simple four-sublattice order-disorder model is developed for description of phase transitions and dielectric properties of the Rochelle salt crystal. The model is developed as a…
XY Spin Fluid in an External Magnetic Field
I. P. Omelyan, W. Fenz, I. M. Mryglod +1
A method of integral equations is developed to study inhomogeneous fluids with planar spins in an external field. As a result, the calculations for these systems appear to be no mo…
Electronic Raman scattering in correlated materials: exact treatment of nonresonant, mixed, and resonant scattering with dynamical mean field theory
A. M. Shvaika, O. Vorobyov, J. K. Freericks +1
We solve for the electronic Raman scattering response functions on an infinite-dimensional hypercubic lattice employing dynamical mean field theory. This contribution extends previ…
Regularly alternating spin-1/2 anisotropic XY chains: The ground-state and thermodynamic properties
Oleg Derzhko, Johannes Richter, Taras Krokhmalskii +1
Using the Jordan-Wigner transformation and continued fractions we calculate rigorously the thermodynamic quantities for the spin-1/2 transverse Ising chain with periodically varyin…
Resonant Enhancement of Electronic Raman Scattering
A. M. Shvaika, O. Vorobyov, J. K. Freericks +1
We present an exact solution for electronic Raman scattering in a single-band, strongly correlated material, including nonresonant, resonant and mixed contributions. Results are de…
Critical properties of random anisotropy magnets
M. Dudka, R. Folk, Yu. Holovatch
The problem of critical behaviour of three dimensional random anisotropy magnets, which constitute a wide class of disordered magnets is considered. Previous results obtained in ex…
Resonant electronic Raman scattering near a quantum critical point
A. M. Shvaika, O. Vorobyov, J. K. Freericks +1
We calculate the resonant electronic Raman scattering for the Falicov-Kimball model near the Mott transition on a hypercubic lattice. The solution is exact, and employs dynamical m…
Strongly localised molecular orbitals for -quartz
Oleh Danyliv, Lev Kantorovich
A previously proposed computational procedure for constructing a set of nonorthogonal strongly localised one-electron molecular orbitals (O. Danyliv, L. Kantorovich - physics/04011…
Influence of long-range correlated quenched disorder on the adsorption of long flexible polymer chains on a wall
Z. Usatenko, A. Ciach
The process of adsorption on a planar wall of long-flexible polymer chains in the medium with quenched long-range correlated disorder is investigated. We focus on the case of corre…
Universality classes of three-dimensional -vector model
M. Dudka, Yu. Holovatch, T. Yavors'kii
We study the conditions under which the critical behavior of the three-dimensional -vector model does not belong to the spherically symmetrical universality class. In the calcu…
Exact results for spatial decay of the one-body density matrix in low-dimensional insulators
Janusz Jedrzejewski, Taras Krokhmalskii
We provide a tight-binding model of insulator, for which we derive an exact analytic form of the one-body density matrix and its large-distance asymptotics in dimensions . T…
Ising fluids in an external magnetic field: an integral equation approach
I. P. Omelyan, I. M. Mryglod, R. Folk +1
The phase behavior of Ising spin fluids is studied in the presence of an external magnetic field with the integral equation method. The calculations are performed on the basis of a…
Interference of outgoing electromagnetic waves generated by two point-like sources
Yurij Yaremko
An energy-momentum carried by electromagnetic field produced by two point-like charged particles is calculated. Integration region considered in the evaluation of the bound and emi…
Calculation of electron density of periodic systems using non-orthogonal localised orbitals
Lev Kantorovich, Oleh Danyliv
Methods for calculating an electron density of a periodic crystal constructed using non-orthogonal localised orbitals are discussed. We demonstrate that an existing method based on…