Repulsive Casimir forces.

@article{Kenneth2002RepulsiveCF,
  title={Repulsive Casimir forces.},
  author={Oded Kenneth and Israel Klich and Ady Mann and Michael Revzen},
  journal={Physical review letters},
  year={2002},
  volume={89 3},
  pages={
          033001
        }
}
We discuss repulsive Casimir forces between dielectric materials with nontrivial magnetic susceptibility. It is shown that considerations based on the naive pairwise summation of van der Waals and Casimir-Polder forces may not only give an incorrect estimate of the magnitude of the total Casimir force but even the wrong sign of the force when materials with high dielectric and magnetic responses are involved. Indeed repulsive Casimir forces may be found in a large range of parameters, and we… 

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* Electronic address: kenneth@physics.technion.ac.il

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