Nonequilibrium Casimir-Polder Force: Magnus-like Effect

• URL: http://arxiv.org/abs/2606.31610v1
• Date: Tue, 30 Jun 2026 12:58:28 GMT
• Title: Nonequilibrium Casimir-Polder Force: Magnus-like Effect
• Abstract summary: The motion of a particle in vacuum near macroscopic bodies gives rise to a Magnus-like contribution to the nonequilibrium Casimir-Polder force.<n>Our results establish a striking connection between quantum fluctuations-induced forces and the classical Magnus effect in fluid dynamics.
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• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• 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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