Selected Publications
 

Energy spectra of quantum turbulence: Large-scale simulation and modeling

Narimasa Sasa, Takuma Kano, Masahiko Machida, Victor S. L’vov, Oleksii Rudenko and Makoto Tsubota

In a 20483 simulation of quantum turbulence within the Gross-Pitaevskii equation, it is demonstrated that thelarge-scale motions have a classical Kolmogorov-1941 energy spectrum E(k) ∝ k−5/3, followed by an energy
accumulation with E(k)  const at k about the reciprocal mean intervortex distance. This behavior was predicted by the L’vov-Nazarenko-Rudenko bottleneck model of gradual eddy-wave crossover [L’vov, Nazarenko, and
Rudenko, J. Low Temp. Phys. 153, 140 (2008)], further developed in the paper.


Phys. Rev. B 84, 054525 (2011)

doi: 10.1103/PhysRevB.84.054525