778 citations · 4.4k across the 68 of their papers we have counts for
17 papers · 1 filter
Van der Waals Anomaly
Itai Y. Efrat, Ulf Leonhardt
In inhomogeneous dielectric media the divergence of the electromagnetic stress is related to the gradients of \varepsilon and μ, which is a consequence of Maxwell's equations. Inve…
Casimir self-stress in a dielectric sphere
Yael Avni, Ulf Leonhardt
The dielectric sphere has been an important test case for understanding and calculating the vacuum force of a dielectric body onto itself. Here we develop a method for computing th…
Casimir stress in materials: hard divergency at soft walls
Itay Griniasty, Ulf Leonhardt
The Casimir force between macroscopic bodies is well understood, but not the Casimir stress inside bodies. Suppose empty space or a uniform medium meets a soft wall where the refra…
Casimir stress inside planar materials
Itay Griniasty, Ulf Leonhardt
Current theory is able to predict the Casimir force between macroscopic bodies with an accuracy only limited by the knowledge of the material parameters. Yet surprisingly after alm…
An exact solution for the Casimir force in a spherically symmetric medium
Ulf Leonhardt, William M. R. Simpson
We calculated the force of the quantum vacuum, the Casimir force, in a spherically symmetric medium, Maxwell's fish eye, surrounded by a perfect mirror and derived an exact analyti…
Comment on "Quantum Friction - Fact or Fiction?"
Ulf Leonhardt
If quantum friction existed [J.B. Pendry, New J. Phys. 12, 033028 (2010)] an unlimited amount of useful energy could be extracted from the quantum vacuum and Lifshitz theory would…