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
22 papers · 1 filter
Coherence, decoherence, and memory effects in the problems of quantum surface diffusion
V. V. Ignatyuk
We consider surface diffusion of a single particle, which performs site-to-site under-barrier hopping, fulfils intrasite motion between the ground and the first excited states with…
Universal amplitude in density-force relations for polymer chains in confined geometries: Massive field theory approach
Z. Usatenko
The universal density-force relation is analyzed and the correspondent universal amplitude ratio is obtained using the massive field theory approach in fixed space dimen…
Analysis of the 3d massive renormalization group perturbative expansions: a delicate case
B. Delamotte, M. Dudka, Yu. Holovatch +1
The effectiveness of the perturbative renormalization group approach at fixed space dimension d in the theory of critical phenomena is analyzed. Three models are considered: the O(…
Exact solution of a spin-1/2 chain with three-site interactions in a random transverse field: Influence of randomness on quantum phase transition
Volodymyr Derzhko, Oleg Derzhko, Johannes Richter
We present exact results for the ground-state and thermodynamic properties of the spin-1/2 chain with three-site interactions in a random (Lorentzian) transverse field. We dis…
Star copolymers in porous environments: scaling and its manifestations
Viktoria Blavatska, Christian von Ferber, Yurij Holovatch
We consider star polymers, consisting of two different polymer species, in a solvent subject to quenched correlated structural obstacles. We assume that the disorder is correlated…
Shape anisotropy of polymers in disordered environment
Viktoria Blavatska, Wolfhard Janke
We study the influence of structural obstacles in a disordered environment on the size and shape characteristics of long flexible polymer macromolecules. We use the model of self-a…
Theta-polymers in crowded media under the stretching force
Viktoria Blavatska, Wolfhard Janke
We study the peculiarities of stretching of globular polymer macromolecules in a disordered (crowded) environment, using the model of self-attracting self-avoiding walks on site-di…
Emergent Ising degrees of freedom in frustrated two-leg ladder and bilayer Heisenberg antiferromagnets
Oleg Derzhko, Taras Krokhmalskii, Johannes Richter
Based on exact diagonalization data for finite quantum Heisenberg antiferromagnets on two frustrated lattices (two-leg ladder and bilayer) and analytical arguments we map low-energ…
About the relevance of the fixed dimension perturbative approach to frustrated magnets in two and three dimensions
B. Delamotte, M. Dudka, Yu. Holovatch +1
We show that the critical behaviour of two- and three-dimensional frustrated magnets cannot reliably be described from the known five- and six-loops perturbative renormalization gr…
Nonequilibrium statistical operator method in the Renyi statistics
B. Markiv, R. Tokarchuk, P. Kostrobij +1
The generalization of the Zubarev nonequilibrium statistical operator method for the case of Renyi statistics is proposed when the relevant statistical operator (or distribution fu…
Human activity as the decision-based queueing process: statistical data analysis of waiting times in scientific journals
O. Mryglod, Yu. Holovatch
We consider the editorial processing of papers in scientific journals as a human activity process based on the decision making. A functional form of the probability distributions o…
Resonant Raman scattering effects in a nesting driven charge-density-wave insulator: exact analysis of the spinless Falicov-Kimball model with dynamical mean-field theory
O. P. Matveev, A. M. Shvaika, J. K. Freericks
We calculate the total electronic Raman scattering spectrum for a system with a charge density wave on an infinite-dimensional hypercubic lattice. The problem is solved exactly for…
Biconical critical dynamics
R. Folk, Yu. Holovatch, G. Moser
A complete two loop renormalization group calculation of the multicritical dynamics at a tetracritical or bicritical point in anisotropic antiferromagnets in an external magnetic f…
The equation of state of the n-vector model: collective variables method
P. R. Kozak, M. P. Kozlovskii, Z. Usatenko
The critical behavior of the three-dimensional n-vector model in the presence of an external field is investigated. Mathematical description is performed with the collective variab…
On conjectured local generalizations of anisotropic scale invariance and their implications
S. Rutkevich, H. W. Diehl, M. A. Shpot
The theory of generalized local scale invariance of strongly anisotropic scale invariant systems proposed some time ago by Henkel [Nucl. Phys. B \textbf{641}, 405 (2002)] is examin…
Magnetic properties of the quantum spin-1/2 XX diamond chain: The Jordan-Wigner approach
Taras Verkholyak, Jozef Strecka, Michal Jascur +1
The Jordan-Wigner transformation is applied to study magnetic properties of the quantum spin-1/2 model on the diamond chain. Generally, the Hamiltonian of this quantum spin sy…
Critical phenomena on scale-free networks: logarithmic corrections and scaling functions
V. Palchykov, C. von Ferber, R. Folk +2
In this paper, we address the logarithmic corrections to the leading power laws that govern thermodynamic quantities as a second-order phase transition point is approached. For pha…
Spin vortices and vacancies: interactions and pinning on a square lattice
Oleksandr Kapikranian, Yurij Holovatch
The study gives a decisive answer to the recently risen question about the type and origin of interaction between spin vortices and spin vacancies in 2D spin models. The approach i…
Universal features of polymer shapes in crowded environment
Viktoria Blavatska, Christian von Ferber, Yurij Holovatch
We study the universal characteristics of the shape of a polymer chain in an environment with correlated structural obstacles, applying the field-theoretical renormalization group…
On resonant scatterers as a factor limiting carrier mobility in graphene
Z. H. Ni, L. A. Ponomarenko, R. R. Nair +8
We show that graphene deposited on a substrate has a non-negligible density of atomic scale defects. This is evidenced by a previously unnoticed D peak in the Raman spectra with in…
Hydrogen transport in superionic system Rb3H(SeO4)2: a revised cooperative migration mechanism
N. Pavlenko, A. Pietraszko, A. Pawlowski +3
We performed density functional studies of electronic properties and mechanisms of hydrogen transport in Rb3H(SeO4)2 crystal which represents technologically promising class M3H(XO…
Fractals Meet Fractals: Self-Avoiding Random Walks on Percolation Clusters
V. Blavatska, W. Janke
The scaling behavior of linear polymers in disordered media, modelled by self-avoiding walks (SAWs) on the backbone of percolation clusters in two, three and four dimensions is stu…