Maxwell eigenmode approach to the Casimir-Lifshitz torque
Liow, John Yuh Han
Date of Issue2019
School of Physical and Mathematical Sciences
More than 40 years ago, Barash published a calculation of the full retarded Casimir-Lifshitz torque for planar birefringent media with arbitrary degrees of anisotropy. An independent theoretical confirmation has been lacking since. We report a systematic and transparent derivation of the torque between two media with both electric and magnetic birefringence. Our approach, based on an eigenmode decomposition of Maxwell's equations, generalizes Barash's result for electrically birefringent materials, and can be generalized to a wide range of anisotropic materials and finite thickness effects.
Physical Review A
© 2019 American Physical Society. All rights reserved. This paper was published in Physical Review A and is made available with permission of American Physical Society