Casimir force on amplifying bodies
Quantum Physics
2015-05-13 v1
Abstract
Based on a unified approach to macroscopic QED that allows for the inclusion of amplification in a limited space and frequency range, we study the Casimir force as a Lorentz force on an arbitrary partially amplifying system of linearly locally responding (isotropic) magnetoelectric bodies. We demonstrate that the force on a weakly polarisable/magnetisable amplifying object in the presence of a purely absorbing environment can be expressed as a sum over the Casimir--Polder forces on the excited atoms inside the body. As an example, the resonant force between a plate consisting of a dilute gas of excited atoms and a perfect mirror is calculated.
Keywords
Cite
@article{arxiv.0902.3874,
title = {Casimir force on amplifying bodies},
author = {Agnes Sambale and Dirk-Gunnar Welsch and Stefan Yoshi Buhmann and Ho Trung Dung},
journal= {arXiv preprint arXiv:0902.3874},
year = {2015}
}