Specific heat of the Kelvin modes in low temperature superfluid turbulence

2001/02/01 by Uwe R. Fischer
Physics and Astronomy · #cond-mat

paper · pdf · doi:10.1103/physrevb.63.212504

published as Phys. Rev. B Vol. 63, 212504 (2001) · 3 pages, 1 figure

arxiv created 2001/02/01 · arxiv updated 2009/11/30

Abstract

It is pointed out that the specific heat of helical vortex line excitations, in low temperature superfluid turbulence experiments carried out in helium II, can be of the same order as the specific heat of the phononic quasiparticles. The ratio of Kelvin mode and phonon specific heats scales with L₀ T^-5/2, where L₀ represents the smoothed line length per volume within the vortex tangle, such that the contribution of the vortex mode specific heat should be observable for L₀ = 10⁶-10⁸ cm^-2, and at temperatures which are of order 1-10 mK.

Related

• Superfluid Turbulence in the Kelvin Wave Cascade Regime
• Elementary excitations and heat capacity singularity in superfluid helium
• Decay of superfluid turbulence via Kelvin wave radiation and vortex reconnections
• Interaction and decay of Kelvin waves in the Gross-Pitaevskii model
• Damping of vortex waves in a superfluid