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arXiv · 2607.16011

Negative quantum friction in nanoscale water flows: the Wigner picture

Adriano Tiribocchi·Marco Lauricella·Efthimios Kaxiras·Sauro Succi
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Abstract

We explore the phenomenon of "quantum" friction based on a single-particle model patterned after the Wigner equation describing electrons flow in a solid wall confining nanoscale water flows. The numerical simulations show a clear signature of negative quantum friction, namely a net momentum transfer from the electrons in the solid wall to the flowing water molecules. Such net momentum transfer results into a sizeable reduction of the water friction, up to forty percent, depending on the strength of the coupling between classical and quantum fluctuations. Our results offer the prospect of a theoretical framework bridging classical and quantum description by using continuum kinetic theories and particle-based simulations.

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Adriano Tiribocchi, Marco Lauricella, Efthimios Kaxiras, Sauro Succi. 2026-07-17. Negative quantum friction in nanoscale water flows: the Wigner picture. https://arxiv.org/abs/2607.16011

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