Перегляд за автором "Shygorin, P."

Сортувати за: Порядок: Результатів:

  • Equations of Coupled Conden¬sate and Non-condensate Dynamics in the Trapped Bose Gas 
    Shygorin, P.; Svidzynskyj, A. (Український фізичний журнал, 2010)
    We constructed equations of the condensed Bose gas dynamics at nonzero temperatures on the bases of the first principles of statistical mechanics. We derived the equation of motion for the condensate wavefunction and the ...
  • First and second sounds in a degenerate Bose gas 
    Dmytruk, I.; Svidzynskiy, A.; Shygorin, P. (Физика низких температур, 2017)
    In this work the propagation of sound waves in a degenerate quantum gas is considered. We modify the Wang Chang and Uhlenbeck method for description of the sounds in a Maxwell gas for the case of a degenerate quantum gas. ...
  • 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 ...
  • Microscopic derivation of the hydrodynamic equations for the superfluid fermi-systems 
    Shygorin, P.; Svidzynsky, A. (Condensed Matter Physics, 2005)
    Starting from the first principles of statistical mechanics, the two-fluid hydrodynamics of superconductor in ideal approximation is constructed. The system of equations of motion for normal and anomalous correlation ...
  • Modified Bogolyubov’s Derivation of the Two-fluid Hydrodynamics 
    Shygorin, P.; Svidzynskyj, A. (2010)
    A consistent microscopic derivation of the two-fluid hydrodynamics for superfluid helium-4 in the ideal approximation is represented The starting point in our formalism is a system of Heisenberg’s equation of motion for ...