Authors: Michikazu Kobayashi Makoto Tsubota
Publish Date: 2007/06/02
Volume: 148, Issue: 3-4, Pages: 275-279
Abstract
Microscopic dissipation mechanism of quantized vortices in quantum fluid is studied numerically by solving the GrossPitaevskii equation coupled with the BogoliubovdeGennes equation for thermal excitations At low temperatures dissipation works at smaller scales than the vortex core size which supports the selfsimilar cascade process of quantized vortices at large scales and the Kolmogorov energy spectrum of quantum turbulence On the other hand this dissipation spreads to larger scales at high temperatures and directly affects the vortex dynamics This effect of dissipation at high temperatures is qualitatively similar to the mutual friction in superfluid 4He
Keywords: