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
33 papers · 1 filter
Enhanced magnetoelectric effect near a field-driven zero-temperature quantum phase transition of the spin-1/2 Heisenberg-Ising ladder
Jozef Strečka, Lucia Gálisová, Taras Verkholyak
Magnetoelectric effect of the spin-1/2 Heisenberg-Ising ladder in a presence of the external electric and magnetic fields is rigorously examined by taking into account Katsura-Naga…
Effects of diagonal strains and H-bond geometry in antiferroelectric squaric acid crystals
A. P. Moina
The proton ordering model of the phase transition and physical properties of antiferroelectric crystals of squaric acid is modified by taking into account the influence of diagonal…
Boundary conformal field theory at the extraordinary transition: The layer susceptibility to
M. A. Shpot
We present an analytic calculation of the layer (parallel) susceptibility at the extraordinary transition in a semi-infinite system with a flat boundary. Using the method of integr…
Physicist's approach to public transportation networks: between data processing and statistical physics
Yaryna Korduba, Yurij Holovatch, Robin de Regt
In this paper we aim to demonstrate how physical perspective enriches usual statistical analysis when dealing with a complex system of many interacting agents of non-physical origi…
Bound states in the compactified gravity
Askold Duviryak
A potential of pointlike mass in the partially compactified multidimensional space is considered. The problem is reduced to the multidimensional Poisson equation with the Dirac com…
Bose-Fermi-Hubbard model in the truncated Hilbert space limit
V. O. Krasnov, I. V. Stasyuk
It is shown that in the Bose-Fermi-Hubbard model which is used for a description of the ultracold atomic boson-fermion mixture in the optical lattice, the r…
Possibility of a continuous phase transition in random-anisotropy magnets with ageneric random-axis distribution
Dmytro Shapoval, Maxym Dudka, Andrei A. Fedorenko +1
We reconsider the problem of the critical behavior of a three-dimensional symmetric magnetic system in the presence of random anisotropy disorder with a generic trimodal ran…
Large-scale structures in the CDM Universe: network analysis and machine learning
Maksym Tsizh, Bohdan Novosyadlyj, Yurij Holovatch +1
We perform an analysis of the Cosmic Web as a complex network, which is built on a CDM cosmological simulation. For each of nodes, which are in this case dark matter halos forme…
Superionic liquids in conducting nanoslits: A variety of phase transitions and ensuing charging behavior
Maxym Dudka, Svyatoslav Kondrat, Olivier Bénichou +2
We develop a theory of charge storage in ultra-narrow slit-like pores of nano\-structured electrodes. Our analysis is based on the Blume-Capel model in external field, which we sol…
Peculiarities in pseudo-transitions of a mixed spin- Ising-Heisenberg double-tetrahedral chain in an external magnetic field
Onofre Rojas, Jozef Strečka, Oleg Derzhko +1
Recently, it has been rigorously verified that several one-dimensional (1D) spin models may exhibit a peculiar pseudo-transition accompanied with anomalous response of thermodynami…
Enhanced solvation force extrapolation for speeding up molecular dynamics simulations of complex biochemical liquids
Igor Omelyan, Andriy Kovalenko
We propose an enhanced approach to the extrapolation of mean potential forces acting on atoms of solute macromolecules due to their interactions with solvent atoms in complex bioch…
Towards low-temperature peculiarities of thermodynamic quantities for decorated spin chains
Taras Krokhmalskii, Taras Hutak, Onofre Rojas +2
We discuss the origin of an enigmatic low-temperature behavior of one-dimensional decorated spin systems which was coined the pseudo-transition. Tracing out the decorated parts res…
Restrictions on the existence of weak values in quantum mechanics: weak quantum evolution concept
Gleb A. Skorobagatko
It is shown, that the Aharonov-Albert-Vaidman concept of weak values appears to be a consequence of a more general quantum phenomenon of weak quantum evolution. Here the concept of…
Spatial population dynamics: beyond the Kirkwood superposition approximation by advancing to the Fisher-Kopeliovich ansatz
Igor Omelyan
The superior Fisher-Kopeliovich closure is applied to the hierarchy of master equations for spatial moments of population dynamics for the first time. As a consequence, the populat…
Reference approach in theory of pseudospin systems
R. R. Levitskii, S. I. Sorokov, O. R. Baran
For theoretical description of pseudospin systems with essential short-range and long-range interactions we use the method based on calculations of the free energy functional with…
Pair correlation functions of the Ising type model with spin 1 within two-particle cluster approximation
O. R. Baran, R. R. Levitskii
The Blume-Emery-Griffiths model on hypercubic lattices within the two-particle cluster approximation is investigated. The expressions for the pair correlation functions in …
Phase diagrams of spin-1 Ising model with bilinear and quadrupolar interactions under magnetic field. Two-particle cluster approximation
R. R. Levitskii, O. R. Barana, B. M. Lisnii
The spin-1 Ising model with bilinear and quadrupolar short-range interactions under magnetic field is investigated within the two-particle cluster approximation. It is shown that f…
Cluster, Classify, Regress: A General Method For Learning Discountinous Functions
David E. Bernholdt, Mark R. Cianciosa, Clement Etienam +3
This paper presents a method for solving the supervised learning problem in which the output is highly nonlinear and discontinuous. It is proposed to solve this problem in three st…
Influence of transverse field on the spin-3/2 Blume-Capel model on rectangular lattice
O. Baran, R. Levitskii
Transverse field effect on thermodynamic properties of the spin-3/2 Blume-Capel model on rectangular lattice in which the interactions in perpendicular directions differ in signs i…
Phase diagrams of spin-3/2 Blume-Capel model on rectangular lattice under longitudinal magnetic field
O. Baran, R. Levitskii
The spin-3/2 Blume-Capel model on a rectangular lattice with the ferromagnetic bilinear short-range interaction in one direction and the anti-ferromagnetic one $…
Universal size and shape ratios for arms in star-branched polymers: theory and mesoscopic simulations
Ostap Kalyuzhnyi, Khristine Haidukivska, Viktoria Blavatska +1
Star polymer undergoes a transformation from a group of loosely coupled chains at low number of arms to a dense hairy colloid at their high number. This change affects solubility,…
Ising model with invisible states on scale-free networks
Petro Sarkanych, Mariana Krasnytska
We consider the Ising model with invisible states on scale-free networks. Our goal is to investigate the interplay between the entropic and topological influence on a phase transit…
Transverse excitations and zigzag transition in quasi-1D hard-disk system
Adrian Huerta, Taras Bryk, Andrij Trokhymchuk
Molecular dynamics computer simulations of collective excitations in a system of hard disks confined to a narrow channel of the specific width, that resembles 2D triangular lattice…
Cluster-based Haldane phases, bound magnon crystals and quantum spin liquids of a mixed spin-1 and spin-1/2 Heisenberg octahedral chain
Katarina Karlova, Jozef Strecka, Taras Verkholyak
The mixed spin-1 and spin-1/2 Heisenberg octahedral chain with regularly alternating monomeric spin-1 sites and square-plaquette spin-1/2 sites is investigated using variational te…