Перегляд Condensed Matter Physics за назвою

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  • Quantum anharmonic crystal in functional integral approach 
    Kondratiev, Yu.; Kozitsky, Yu.; Pasurek, T.; Ockner, M.R. (Condensed Matter Physics, 2003)
    A lattice model of interacting light quantum particles of mass m oscillating in a crystalline field is considered in the framework of an approach based on functional integrals. The main aspects of this approach are ...
  • Quantum codes from algebraic curves with automorphisms 
    Shaska, T. (Condensed Matter Physics, 2008)
    Let X be an algebraic curve of genus g ≥ 2 defined over a field Fq of characteristic p > 0. From X, under certain conditions, we can construct an algebraic geometry code C. If the code C is self-orthogonal under the ...
  • Quantum dissipation and phenomenological approache 
    Chattah, A.K.; Caceres, M.O. (Condensed Matter Physics, 2000)
    Using Terwiel’s cumulants the Markovian approximation to arrive to the Quantum Master Equation, for a system interacting with a thermal bath, is revisited. The second order weak coupling approximation is analyzed, then a ...
  • Quantum effects in an anharmonic crystal 
    Kozitsky, Yu. (Condensed Matter Physics, 2002)
    A model of quantum particles performing D -dimensional anharmonic oscillations around their equilibrium positions which form the d -dimensional simple cubic lattice Zd is considered. The model undergoes a structural phase ...
  • Quantum kinetic equations approach to the description of chemical reactions between adparticles at a metallic surface 
    Ignatyuk, V.V.; Tokarchuk, M.V.; Kostrobij, P.P. (Condensed Matter Physics, 2006)
    Adparticle dynamics at a metallic surface is studied by means of quantum kinetic equations. Kinetic equations of the reaction-diffusion type are written down for nonequilibrium one-particle distribution functions of ...
  • Quantum kinetic theory of metal clusters in an intense electromagnetic field 
    Bonitz, M.; Dufty, J.W. (Condensed Matter Physics, 2004)
    A quantum kinetic theory for weakly inhomogeneous charged particle systems is derived within the framework of nonequilibrium Green’s functions. The results are of relevance for valence electrons of metal clusters as well ...
  • Quantum mechanic tunneling and efficiency of Faraday current-generating process in porous nanostructures 
    Lukiyanets, B.A.; Matulka, D.V.; Grygorchak, I.I. (Condensed Matter Physics, 2011)
    Thermodynamics and kinetics of lithium intercalation into C-SiO₂ nanocomposites are investigated. Dependencies of both differential capacity and intercalation kinetics on the nanocomposite size are established. The processes ...
  • Quantum phase transition: Van Vleck antiferromagnet in a magnetic field 
    Ivanova, I.M.; Kalita, V.M.; Pashkov, V.O.; Loktev, V.M. (Condensed Matter Physics, 2008)
    Theoretical description of magnetic properties of antiferromagnetic state, induced by the longitudinal magnetic eld, in the Van Vleck singlet magnet with single-ion anisotropy of easy-plane type and ion spin S = ...
  • Quantum statistical mechanics of electron gas in magnetic field 
    Dubrovskii, I.M. (Condensed Matter Physics, 2006)
    Electron eigenstates in a magnetic field are considered. Density of the electrical current and an averaged magnetic moment are obtained. Density of states is investigated for two-dimensional electron in a circle that is ...
  • Quantum stochastic processes: boson and fermion Brownian motion 
    Kobryn, A.E.; Hayashi, T.; Arimitsu, T. (Condensed Matter Physics, 2003)
    Dynamics of quantum systems which are stochastically perturbed by linear coupling to the reservoir can be studied in terms of quantum stochastic differential equations (for example, quantum stochastic Liouville equation and ...
  • Quantum transport equations for Bose systems taking into account nonlinear hydrodynamic processes 
    Hlushak, P.A.; Tokarchuk, M.V. (Condensed Matter Physics, 2014)
    Using the method of nonequilibrium statistical operator by Zubarev, an approach is proposed for the description of kinetics which takes into account the nonlinear hydrodynamic fluctuations for a quantum Bose system. ...
  • Quasiaverages, symmetry breaking and irreducible Green functions method 
    Kuzemsky, A.L. (Condensed Matter Physics, 2010)
    The development and applications of the method of quasiaverages to quantum statistical physics and to quantum solid state theory and, in particular, to quantum theory of magnetism, were considered. It was shown that the ...
  • Quasi-one dimensional classical fluids 
    Percus, J.K.; Wang, Q.-H. (Condensed Matter Physics, 2003)
    We study the equilibrium statistical mechanics of simple fluids in narrow pores. A systematic expansion is made about a one-dimensional limit of this system. It starts with a density functional, constructed from ...
  • Quasiparticle electronic band structure of the alkali metal chalcogenides 
    Syrotyuk, S.V.; Shved, V.M. (Condensed Matter Physics, 2015)
    The electronic energy band spectra of the alkali metal chalcogenides M₂A (M: Li, Na, K, Rb; A: O, S, Se, Te) have been evaluated within the projector augmented waves (PAW) approach by means of the ABINIT code. The Kohn-Sham ...
  • Quasiparticles in the XXZ model 
    Lu, P.; Müller, G.; Karbach, M. (Condensed Matter Physics, 2009)
    The coordinate Bethe ansatz solutions of the XXZ model for a one-dimensional spin-1/2 chain are analyzed with focus on the statistical properties of the constituent quasiparticles. Emphasis is given to the special cases ...
  • Quasiparticle states driven by a scattering on the preformed electron pairs 
    Domanski, T. (Condensed Matter Physics, 2016)
    We analyze evolution of the single particle excitation spectrum of the underdoped cuprate superconductors near the anti-nodal region, considering temperatures below and and above the phase transition. We inspect the ...
  • Quasi-relativistic center-of-mass variables in applications 
    Gaida, R.; Tretyak, V.; Yaremko, Yu. (Condensed Matter Physics, 1998)
    Collective center-of-mass variables are introduced in the Lagrangian formalism of the relativistic classical mechanics of directly interacting particles. It is shown that the transition to the Hamiltonian formalism leads ...
  • Quasi-stationary states of electrons interacting with strong electromagnetic field in two-barrier resonance tunnel nano-structure 
    Tkach, M.V.; Seti, Ju.O.; Voitsekhivska, O.M. (Condensed Matter Physics, 2012)
    An exact solution of non-stationary Schrodinger equation is obtained for a one-dimensional movement of electrons in an electromagnetic field with arbitrary intensity and frequency. Using it, the permeability coefficient ...
  • Radiation damages and self-sputtering of high-radioactive dielectrics: spontaneous emission of submicronic dust particles 
    Baryakhtar, V.; Gonchar, V.; Zhidkov, A.; Zhydkov, V. (Condensed Matter Physics, 2002)
    The spontaneous emission of submicronic particles from a surface of highradioactive dielectrics has been under the experimental study for the first time. Formation of disordered regions due to intrinsic irradiation and ...
  • Radiation spectrum of an electron moving in a spiralin medium 
    Konstantinovich, A.V.; Konstantinovich, I.A. (Condensed Matter Physics, 2007)
    The action of the Doppler effect on the particularities of radiation power spectral distribution of an electron moving in a spiral in a medium has been investigated near the Cherenkov threshold. The fine structure of the ...

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