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4 papers
Kinetic Theory of a Spin-1/2 Bose-Condensed Gas
T. Nikuni, J. E. Williams
We derive a kinetic theory for a spin-1/2 Bose-condensed gas of two-level atoms at finite temperatures. The condensate dynamics is described by a generalized Gross-Pitaevskii equat…
Two-Fluid Hydrodynamics in Trapped Bose Gases and in Superfluid Helium
Allan Griffin, Tetsuro Nikuni
A review is given of recent theoretical work on the superfluid dynamics of trapped Bose gases at finite temperatures, where there is a significant fraction of non-condensate atoms.…
Dynamics of trapped Bose gases at finite temperatures
E. Zaremba, T. Nikuni, A. Griffin
Starting from an approximate microscopic model of a trapped Bose-condensed gas at finite temperatures, we derive an equation of motion for the condensate wavefunction and a quantum…
Hydrodynamic damping in trapped Bose gases
T. Nikuni, A. Griffin
Griffin, Wu and Stringari have derived the hydrodynamic equations of a trapped dilute Bose gas above the Bose-Einstein transition temperature. We give the extension which includes…