Thermal dissipation in quantum turbulence

Details Thermal dissipation in quantum turbulence Thermal dissipation in quantum turbulence

2006-07-18

arxiv.org/abs/cond-mat/0607434v3

Physics

Condensed Matter

Disordered Systems and Neural Networks

4 pages, 6 figures, submitted to APS

Scientific paper

10.1103/PhysRevLett.97.145301

The microscopic mechanism of thermal dissipation in quantum turbulence has been numerically studied by solving the coupled system involving the Gross-Pitaevskii equation and the Bogoliubov-de Gennes equation. At low temperatures, the obtained dissipation does not work at scales greater than the vortex core size. However, as the temperature increases, dissipation works at large scales and it affects the vortex dynamics. We successfully obtained the mutual friction coefficients of the vortex dynamics as functions of temperature, which can be applied to the vortex dynamics in dilute Bose-Einstein condensates.

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