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arXiv · 2603.21979

Nonlocal energy transfer mechanism in three-dimensional quantum turbulence

Elliot Bes·Guillaume Balarac·Juan Ignacio Polanco
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Abstract

We investigate the kinetic energy cascade in zero-temperature quantum turbulence. Using simple theoretical arguments and unprecedented numerical simulations, we unveil an universal mechanism transferring energy directly from large to very small scales, thus bypassing the Kolmogorov-like local energy cascade and resulting in nonclassical energy spectra. This mechanism rests both on the vast separation of scales typical of superfluid helium-4 flows and on the alignment between quantum vortices and large-scale velocity gradients, in direct analogy with vortex stretching in classical flows.

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Elliot Bes, Guillaume Balarac, Juan Ignacio Polanco. 2026-03-23. Nonlocal energy transfer mechanism in three-dimensional quantum turbulence. https://arxiv.org/abs/2603.21979

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