Specific heat of the Kelvin modes in low temperature superfluid turbulence
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.
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