Vacuum torque, propulsive forces, and anomalous tangential forces: Effects of nonreciprocal media out of thermal equilibrium

• DOI: 10.48550/arxiv.2306.02197
• Publication Date: 2023-01-01
• Authors: Kimball A. Milton; Xin Guo; Gerard Kennedy; Nima Pourtolami; Dylan M. DelCol
• Keywords: Lorentz force; Thermal equilibrium; Cushion

From the generalized fluctuation-dissipation theorem, it is known that a body at rest made of nonreciprocal material may experience torque, even in vacuum, if not thermal equilibrium with its environment. However, does self-propulsion such circumstances, except higher order. Nevertheless, both normal torque and lateral force when adjacent to an ordinary surface transverse translational symmetry. We explore how these phenomena arise, discuss what terminal velocities might be achieved, point out some limitations applying our results observations, including Lorenz-Lorentz correction, cooling due radiation. In spite limitations, effects discussed would seem observable.