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
28 papers · 1 filter
Jordan-Wigner Fermionization and the Theory of Low-Dimensional Quantum Spin Models. Dynamic Properties
Oleg Derzhko
The Jordan-Wigner transformation is known as a powerful tool in condensed matter theory, especially in the theory of low-dimensional quantum spin systems. The aim of this chapter i…
Dynamic properties of the spin-1/2 XY chain with three-site interactions
Taras Krokhmalskii, Oleg Derzhko, Joachim Stolze +1
We consider a spin-1/2 XY chain in a transverse (z) field with multi-site interactions. The additional terms introduced into the Hamiltonian involve products of spin components rel…
Field theory of bicritical and tetracritical points. III. Relaxational dynamics including conservation of magnetization (Model C)
R. Folk, Yu. Holovatch, G. Moser
We calculate the relaxational dynamical critical behavior of systems of symmetry including conservation of magnetization by renormalization group (RG) th…
On the nature of striped phases: Striped phases as a stage of "melting" of 2D crystals
Volodymyr Derzhko, Janusz Jedrzejewski, Taras Krokhmalskii
We discuss striped phases as a state of matter intermediate between two extreme states: a crystalline state and a segregated state. We argue that this state is very sensitive to we…
Spontaneous polarisation of the neutral interface for valence asymmetric coulombic systems
D. di Caprio, M. Holovko
In this paper, we discuss the phenomenon of a spontaneous polarisation of a neutral hard planar interface for valence asymmetric coulombic systems. Within a field theoretical descr…
Simple field theoretical approach of Coulomb systems. Entropic effects
D. di Caprio, J. P. Badiali, M. Holovko
We discuss a new simple field theory approach of Coulomb systems. Using a description in terms of fields, we introduce in a new way the statistical degrees of freedom in relation w…
Field theory of bi- and tetracritical points: Relaxational dynamics
R. Folk, Yu. Holovatch, G. Moser
We calculate the relaxational dynamical critical behavior of systems of symmetry by renormalization group method within the minimal subtraction scheme in…
Nonresonant Raman and inelastic X-ray scattering in the charge-density-wave phase of the spinless Falicov-Kimball model
O. P. Matveev, A. M. Shvaika, J. K. Freericks
Nonresonant inelastic light and X-ray scattering is investigated for the spinless Falicov-Kimball model on an infinite-dimensional hypercubic lattice with a charge-density-wave pha…
Competition between antiferromagnetic instability and frustrations in Fe-Se
J. J. Pulikkotil, L. Ke, M. van Schilfgaarde +2
Using linear-response density-functional theory, we obtain the magnetic interactions in the several iron pnictides. The ground state has been found to be non-collinear in FeSe, wit…
Field theory of bi- and tetracritical points: Statics
R. Folk, Yu. Holovatch, G. Moser
We calculate the static critical behavior of systems of symmetry by renormalization group method within the minimal subtraction scheme in two loop order.…
Walking on fractals: diffusion and self-avoiding walks on percolation clusters
Viktoria Blavatska, Wolfhard Janke
We consider random walks (RWs) and self-avoiding walks (SAWs) on disordered lattices directly at the percolation threshold. Applying numerical simulations, we study the scaling beh…
Multifractality of self-avoiding walks on percolation clusters
Viktoria Blavatska, Wolfhard Janke
We consider self-avoiding walks (SAWs) on the backbone of percolation clusters in space dimensions d=2, 3, 4. Applying numerical simulations, we show that the whole multifractal sp…
Exact low-temperature properties of a class of highly frustrated Hubbard models
Oleg Derzhko, Andreas Honecker, Johannes Richter
We study the repulsive Hubbard model both analytically and numerically on a family of highly frustrated lattices which have one-electron states localized on isolated trapping cells…
Ground-state phases of the spin-1/2 J_1-J_2 Heisenberg antiferromagnet on the square lattice: A high-order coupled cluster treatment
R. Darradi, O. Derzhko, R. Zinke +3
Using the coupled cluster method for high orders of approximation and complementary exact diagonalization studies we investigate the ground state properties of the spin-1/2 --…
The sawtooth chain: From Heisenberg spins to Hubbard electrons
J. Richter, O. Derzhko, A. Honecker
We report on recent studies of the spin-half Heisenberg and the Hubbard model on the sawtooth chain. For both models we construct a class of exact eigenstates which are localized d…
Solvable Two-Body Dirac Equation as a Potential Model of Light Mesons
Askold Duviryak
The two-body Dirac equation with general local potential is reduced to the pair of ordinary second-order differential equations for radial components of a wave function. The class…
Electronic Duality in Strongly Correlated Matter
T. Park, M. J. Graf, L. Boulaevskii +2
Superconductivity develops from an attractive interaction between itinerant electrons that creates electron pairs which condense into a macroscopic quantum state--the superconducti…
Processed Splitting Algorithms for Rigid-Body Molecular Dynamics Simulations
Igor P. Omelyan
A new approach for integration of motion in many-body systems of interacting polyatomic molecules is proposed. It is based on splitting time propagation of pseudo-variables in a mo…
Scaling of complex polymers: new universality classes and beyond
V. Blavatska, C. von Ferber, Yu. Holovatch
We analyse scaling laws that govern macromolecules of different topology: polymer chains, homogeneous and miktoarm star polymers in a good solvent possibly constrained by a porous…
F-electron spectral function of the Falicov-Kimball model and the Wiener-Hopf sum equation approach
A. M. Shvaika, J. K. Freericks
We derive an alternative representation for the -electron spectral function of the Falicov-Kimball model from the original one proposed by Brandt and Urbanek. In the new represe…
Scaling behavior of self-avoiding walks on percolation clusters
Viktoria Blavatska, Wolfhard Janke
The scaling behavior of self-avoiding walks (SAWs) on the backbone of percolation clusters in two, three and four dimensions is studied by Monte Carlo simulations. We apply the pru…
Fixed points in frustrated magnets revisited
B. Delamotte, Yu. Holovatch, D. Ivaneyko +2
We analyze the validity of perturbative renormalization group estimates obtained within the fixed dimension approach of frustrated magnets. We reconsider the resummed five-loop bet…
Public transport networks: empirical analysis and modeling
C. von Ferber, T. Holovatch, Yu. Holovatch +1
We use complex network concepts to analyze statistical properties of urban public transport networks (PTN). To this end, we present a comprehensive survey of the statistical proper…
Electronic charge and orbital reconstruction at cuprate-titanate interfaces
Natalia Pavlenko, Thilo Kopp
In complex transition metal oxide heterostructures of physically dissimilar perovskite compounds, interface phenomena can lead to novel physical properties not observed in either o…