Eur. Phys. J. D (2017) 71: 13
https://doi.org/10.1140/epjd/e2016-70042-8

Regular Article

Casimir torque between two inhomogeneous semi-transparent concentric cylinders

Department of Physics, University of Isfahan, Isfahan, Iran

^a e-mail: msn.amini@sci.ui.ac.ir

Received: 24 January 2016
Received in final form: 10 August 2016
Published online: 19 January 2017

Abstract

Motivated by the problem of Casimir energy, we investigate the idea of using inhomogeneity of surfaces instead of their corrugation, which leads to Casimir interaction between two inhomogeneous semi-transparent concentric cylinders. Using the multiple scattering method, we study the Casimir energy and torque between the cylinders with different potentials subjected to Dirichlet boundary conditions, both in weak and strong coupling regimes. We also extend our formalism to the case of two inhomogeneous dielectrics in a weak coupling regime.