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Casimir force in a compressive transformation medium (2013)
Journal Article
Simpson, W. M. R. (2013). Casimir force in a compressive transformation medium. Physical Review A, 88(6), Article 063852. https://doi.org/10.1103/physreva.88.063852

We consider an example of an idealized inhomogeneous metamaterial which, when introduced into a Casimir cavity, reduces the magnitude of the Casimir force. It has recently been argued, however, that Casimir-Lifshitz forces in inhomogeneous media are... Read More about Casimir force in a compressive transformation medium.

Cutoff dependence of the Casimir force within an inhomogeneous medium (2013)
Journal Article
Horsley, S. A. R., & Simpson, W. M. R. (2013). Cutoff dependence of the Casimir force within an inhomogeneous medium. Physical Review A, 88(1), Article 013833. https://doi.org/10.1103/physreva.88.013833

We consider the ground-state energy of the electromagnetic field in a piston geometry. In the idealized case, where the piston and the walls of the chamber are taken as perfect mirrors, the Casimir pressure on the piston is finite and independent of... Read More about Cutoff dependence of the Casimir force within an inhomogeneous medium.

Divergence of Casimir stress in inhomogeneous media (2013)
Journal Article
Simpson, W. M. R., Horsley, S. A. R., & Leonhardt, U. (2013). Divergence of Casimir stress in inhomogeneous media. Physical Review A, 87(4), Article 043806. https://doi.org/10.1103/physreva.87.043806

We examine the local behavior of the regularized stress tensor commonly used in calculations of the Casimir force for a dielectric medium inhomogeneous in one direction. It is shown that the usual expression for the stress tensor is not finite anywhe... Read More about Divergence of Casimir stress in inhomogeneous media.