Casimir torque between two inhomogeneous semi-transparent concentric cylinders

Abstract

Abstract: Motivated by the problem of Casimir energy, we investigate the idea of usinginhomogeneity of surfaces instead of their corrugation, which leads to Casimir interactionbetween two inhomogeneous semi-transparent concentric cylinders. Using the multiplescattering method, we study the Casimir energy and torque between the cylinders withdifferent potentials subjected to Dirichlet boundary conditions, both in weak and strongcoupling regimes. We also extend our formalism to the case of two inhomogeneousdielectrics in a weak coupling regime. Graphical abstract: [Figure not available: see fulltext.] © 2017, EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg.