On the Casimir repulsion in sphere-plate geometry
arXiv:1302.5290 · doi:10.1103/PhysRevD.87.085031
Abstract
The electromagnetic vacuum energy is considered in the presence of a perfectly conducting plane and a ball with dielectric permittivity and magnetic permeability , . The attention is focused on the Casimir repulsion in this system caused by magnetic permeability of the sphere. In the case of perfectly permeable sphere, , the vacuum energy is estimated numerically. The short and long distance asymptotes corresponding to the repulsive force and respective low temperature corrections and high temperature limits are found for a wide range of . The constraints on the Casimir repulsion in this system are discussed.
11 pages, 5 figures
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