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Перегляд Вопросы атомной науки и техники, 2012 за темою "Section E. Phase Transitions and Diffusion Processes in Condensed Matter and Gases"

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Перегляд Вопросы атомной науки и техники, 2012 за темою "Section E. Phase Transitions and Diffusion Processes in Condensed Matter and Gases"

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  • Valverde, J.S. (Вопросы атомной науки и техники, 2012)
    We propose a two-dimensional spin-1/2 Ising-Heisenberg model with quartic interaction. In this sense the phase diagram for the model at zero temperature is studied, obtaining four different configurations for the unitary ...
  • Shulga, S.N. (Вопросы атомной науки и техники, 2012)
    Unitarity of superfluid states in nuclear matter is studied in the case that the quasi-particle energy matrix holds scalar and vector components in isospin space at the same time, ξ = ξ0 + ξτ. The vector component of ξ can ...
  • Bogolyubov, N.N. Jr.; Sankovich, D.P. (Вопросы атомной науки и техники, 2012)
    The equilibrium properties of a system of interacting bosons are studied from a microscopic point of view. We calculate the superfluid density in the Bogolyubov model of imperfect Bose gas. The model superstable Hamiltonian ...
  • Antonova, E.S.; Virchenko, Yu.P. (Вопросы атомной науки и техники, 2012)
    The cluster expansion of the Bernoulli random field percolation probability of the cubic lattice has been built. On its basis, it has been obtained the upper guaranteed estimate of the percolation threshold and corresponding ...
  • Babich, A.V.; Berezovsky, S.V.; Kitcenko, L.N.; Klepikov, V.F. (Вопросы атомной науки и техники, 2012)
    The model that allows one to generalize the notions of the multicritical and Lifshitz points is considered. The model under consideration includes the higher powers and derivatives of order parameters. Critical phenomena ...
  • Sankovich, D.P. (Вопросы атомной науки и техники, 2012)
    Application of the functional integration methods in equilibrium statistical mechanics of quantum Bose-systems is considered. We show that Gibbs equilibrium averages of Bose-operators can be represented as path integrals ...
  • Abyzov, A.S.; Schmelzer, J.W.P.; Davydov, L.N.; Slezov, V.V. (Вопросы атомной науки и техники, 2012)
    Liquid heavy metal coolant in a fast reactor, as well as in accelerator driven systems, is exhibited to large thermal and pressure shocks which can cause cavitation in the coolant. Here we calculated the work of the critical ...
  • Stupka, A.A. (Вопросы атомной науки и техники, 2012)
    Hydrodynamics of electronic plasma at presence of correlation of charge density is considered. Equations of ideal hydrodynamics with such condition for the case of immobile ions are received. It is shown that a new variable ...
  • Ivashin, A.P.; Poluektov, Yu.M. (Вопросы атомной науки и техники, 2012)
    Using the Gross-Pitaevskii equation (GPE), which accounts for a weak non-locality effects, we study the structure of the vortex filaments in a Bose-gas. We show that the sign of the additional terms in the generalized GPE ...
  • Peletminskii, A.S.; Peletminskii, S.V.; Poluektov, Yu.M. (Вопросы атомной науки и техники, 2012)
    We study a superfluid Bose system with single-particle and pair condensates using a nonperturbative approach. The self-consistency equations for two order parameters are obtained from the principle of maximum entropy. They ...
  • Fateev, M.P. (Вопросы атомной науки и техники, 2012)
    This report is devoted to the study of hopping drift mobility of charge carries in one-dimensional regular chain of localization site with energetic disorder. The individual jump rate was assumed to follow Miller-Abrahams ...
  • Poluektov, Yu.M.; Savchenko, V.N. (Вопросы атомной науки и техники, 2012)
    Possibility of explanation of high electric activity in superfluid helium [1–3] by polarization of helium atoms caused by acceleration is researched. It is shown that this effect is insufficient to explain the phenomenon.
  • Slyusarenko, Yu.V.; Lytvynenko, D.M.; Kirdin, A.I. (Вопросы атомной науки и техники, 2012)
    A consistent theory of equilibrium states of charges and fields above the surface of liquid dielectric film located on a solid substrate is built. The developed approach is used for the description of phase transitions in ...
  • Tanatarov, I.V.; Adamenko, I.N.; Nemchenko, K.E.; Wyatt, A.F.G. (Вопросы атомной науки и техники, 2012)
    We use dispersive hydrodynamics to describe thermal excitations of superfluid helium 4. Dispersion relation of the bulk quasiparticles, phonons and rotons, acts as an input parameter of the theory. Wiener and Hopf method ...
  • Kovalevsky, M.Y.; Kotelnikova, O.A. (Вопросы атомной науки и техники, 2012)
    The results of investigations of magnets with spin s=1 are presented. The analysis of the possible symmetry of exchange interactions and its relationship with the magnetic degrees of freedom was done. We formulate the ...
  • Naumovets, A.S.; Khodusov, V.D. (Вопросы атомной науки и техники, 2012)
    Earlier a series of experiments showed that the energy of a roton in superfluid helium is linearly dependent on electric field. A variable adiabatically changing external electric field leads to a modulation of the roton ...
  • Fateev, M.P. (Вопросы атомной науки и техники, 2012)
    In this report we derive a new version of effective-medium theory for uniform biased diffusion which takes into account both field-created traps and bond disorder. The two random quantities are assumed to be independent. ...
  • Shapovalov, R.V.; Osmayev, O.A. (Вопросы атомной науки и техники, 2012)
    For a weak one-component solution, in which the solvent and dissolved substances are not chemically bound, a simple analytical approximation was found for temperature dependence of limiting solubility of the dissolve ...
  • Coeur-Tourneur, C.; Kopiychenko, D.Yu.; Mchedlov-Petrossyan, P.O. (Вопросы атомной науки и техники, 2012)
    In this communication we present a theoretical study of chemical reactions in a system of solid particles, immersed in a fluid environment. Our primary concern here is investigation of the systems of catalytic particles ...
  • Ivanov, N.; Skalozub, V. (Вопросы атомной науки и техники, 2012)
    Tunneling of the wave packets having rectangular and Gaussian forms through a quantum diode is investigated. By using the potential of the system the S-matrix for this structure is obtained and the analytic expressions ...

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