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arXiv · 2606.31610

Nonequilibrium Casimir-Polder Force: Magnus-like Effect

Maria Vittoria Gurrieri·Kurt Busch·Francesco Intravaia
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Abstract

The motion of a particle in vacuum near macroscopic bodies gives rise to a Magnus-like contribution to the nonequilibrium Casimir-Polder force. This effect originates from the interplay between particle dynamics and material-modified electromagnetic quantum fluctuations, inducing in the particle a direction-dependent angular momentum coupled to the electromagnetic field spin. The resulting drift force is proportional to the cross product of the particle's angular and translational velocities, revealing a rotational transport component in the nonequilibrium Casimir-Polder interaction. Our results establish a striking connection between quantum fluctuations-induced forces and the classical Magnus effect in fluid dynamics.

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Maria Vittoria Gurrieri, Kurt Busch, Francesco Intravaia. 2026-06-30. Nonequilibrium Casimir-Polder Force: Magnus-like Effect. https://arxiv.org/abs/2606.31610

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