2018/09/30 by Qing-Dong Jiang, Frank Wilczek · 1 citation
Physics and Astronomy · #cond-mat.other
paper · pdf · doi:10.1103/physrevb.99.165402
published as Phys. Rev. B 99, 165402 (2019) · improved main text and appendices
arxiv created 2019/03/01 · arxiv updated 2019/04/09
Quantum fluctuations in vacuum can exert a dissipative force on moving objects, which is known as Casimir friction. Especially, a rotating particle in the vacuum will eventually slow down due to the dissipative Casimir friction. Here, we identify a dissipationless force by examining a rotating particle near a bi-isotropic media that generally breaks parity symmetry or/and time-reversal symmetry. The direction of the dissipationless vacuum force is always parallel with the rotating axis of the particle. We therefore call this dissipationless vacuum force the axial Casimir force.