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Перегляд Condensed Matter Physics, 2009, № 4 за датою випуску

Перегляд Condensed Matter Physics, 2009, № 4 за датою випуску

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Editorial

Автор відсутній (Condensed Matter Physics, 2009)

This issue of “Condensed Matter Physics” is dedicated to the 100th anniversary of an outstanding personality of the XXth century, physicist and mathematician Mykola Bogolyubov (21.08.1909–13.02.1992).
Mykola Bogolyubov and Lviv School of Statistical Physics

Yukhnovskii, I. (Condensed Matter Physics, 2009)
Phase diagrams of the Bose-Hubbard model at finite temperature

Stasyuk, I.V.; Mysakovych, T.S. (Condensed Matter Physics, 2009)

The phase transitions in the Bose-Hubbard model are investigated. A single-particle Green's function is calculated in the random phase approximation and the formalism of the Hubbard operators is used. The regions of existence ...
Classical and quantum anisotropic Heisenberg antiferromagnets

Selke, W.; Bannasch, G.; Holtschneider, M.; McCulloch, I.P.; Peters, D.; Wessel, S. (Condensed Matter Physics, 2009)

We study classical and quantum Heisenberg antiferromagnets with exchange anisotropy of XXZ-type and crystal field single-ion terms of quadratic and quartic form in a field. The magnets display a variety of phases, including ...
Bose condensation in (random) traps

Jaeck, Th.; Pulé, J.V.; Zagrebnov, V.A. (Condensed Matter Physics, 2009)

We study a non-interacting (perfect) Bose-gas in random external potentials (traps). It is shown that a generalized Bose-Einstein condensation in the random eigenstates manifests if and only if the same occurs in the ...
Nonequilibrium statistical operator in the generalized hydrodynamics of fluids

Markiv, B.B.; Omelyan, I.P.; Tokarchuk, M.V. (Condensed Matter Physics, 2009)

The investigations of the classical interacting particles systems far from equilibrium using the Zubarev nonequilibrium statistical operator method are presented. The problem of the relaxation of a nonequilibrium state ...
The Bogolyubov method of quasiaverages solves the problem of pressure fluctuations in the Gibbs statistical mechanics

Rudoy, Yu.G. (Condensed Matter Physics, 2009)

The long-standing and highly non-trivial problem of calculating the pressure fluctuations in the Gibbs equilibrium statistical mechanics is fully revised. The previous attempts are critically analyzed and it is shown that ...
Brownian particle in non-equilibrium plasma

Lev, B.I.; Tymchyshyn, V.B.; Zagorodny, A.G. (Condensed Matter Physics, 2009)

The stationary distribution function of Brownian particles in a nonequilibrium dusty plasma is calculated with regard to electron and ion absorption by grains. The distribution is shown to be considerably different from ...
The Lagrangian and Hamiltonian analysis of some relativistic electrodynamics models and their quantization

Bogolubov (Jr.), N.N.; Prykarpatsky, A.K. (Condensed Matter Physics, 2009)

The work is devoted to the study of the Lagrangian and Hamiltonian properties of some relativistic electrodynamics models and is a continuation of our previous investigations. Based on the vacuum field theory approach, ...
Photon kinetics in plasmas

Morozov, V.G.; Röpke, G. (Condensed Matter Physics, 2009)

We present a kinetic theory of radiative processes in many-component plasmas with relativistic electrons and nonrelativistic heavy particles. Using the non-equilibrium Green's function technique in many-particle QED, ...
Bound states of electrons with soliton-like excitations in thermal systems - adiabatic approximations

Ebeling, W.; Velarde, M.G.; Chetverikov, A.P. (Condensed Matter Physics, 2009)

We study the bound states of electrons with solitonic excitations in one and two-dimensional atomic systems. We include Morse interactions between the atoms in a temperature range from low to physiological temperatures. ...
Mass-dependence of self-diffusion coefficients in disparate-mass binary fluid mixtures

Binas, I.; Mryglod, I. (Condensed Matter Physics, 2009)

Self-diffusion coefficients of a binary uid mixture with components differing only in their particle masses are studied, in particular the case when mass ratio μ of light and heavy particles tends to zero. These ...
Microscopic construction of the two-fluid model for superfluid helium-4

Shygorin, P.; Svidzynskyj, A. (Condensed Matter Physics, 2009)

Using a system of Heisenberg's equation of motion for both the normal and the anomalous correlation functions a two-fluid hydrodynamics for superfluid helium-4 was constructed. The method is based on a gradient expansion ...
The 60th anniversary of Professor Yurij Kozitsky

Автор відсутній (Condensed Matter Physics, 2009)
Non-Gaussian behaviour of a self-propelled particle on a substrate

ten Hagen, B.; van Teeffelen, S.; Löwen, H. (Condensed Matter Physics, 2009)

The overdamped Brownian motion of a self-propelled particle which is driven by a projected internal force is studied by solving the Langevin equation analytically. The active particle under study is restricted to ...
Author index of volume 12 (2009)

Автор відсутній (Condensed Matter Physics, 2009)
Method of intermediate problems in the Fröhlich polaron model

Soldatov, A.V. (Condensed Matter Physics, 2009)

Method of intermediate problems in the theory of linear semi-bounded self-adjoint operators on rigged Hilbert space was applied to the investigation of the ground state energy of the Frohlich polaron model. It was shown that ...
The theory of thermodynamic and magnetic properties of multi-band superconductors

Palistrant, M.E. (Condensed Matter Physics, 2009)

The main stages of development of the theory of superconducting systems with overlapping energy bands are formulated. The main references of the classical papers of the authors of this theory (Prof. V.A.Moskalenko and his ...
Ground states of anisotropic antiferromagnets with single ion and cubic anisotropy

Dinh, T.-C.; Folk, R. (Condensed Matter Physics, 2009)

Anisotropic antiferromagnets in an external magnetic field show a rich variety of different ground states meeting in transition lines and multicritical points. We study the dependence of the ground states of these systems ...
Thermodynamics, geometrical frustration and quantum fluctuations in coupled spin chains

Sznajd, J. (Condensed Matter Physics, 2009)

The linear-perturbation real space renormalization transformation (LPRG) is presented and applied to the study of quantum spin chains coupled by interchain interaction (k₁) weaker than intrachain one (k). The method is ...

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