Surface Screening in the Casimir Force

Details Surface Screening in the Casimir Force Surface Screening in the Casimir Force

2005-09-27

arxiv.org/abs/quant-ph/0509190v1

Phys. Rev. A {\bf 72}, 034102 (2005)

Physics

Quantum Physics

5 pages, 2 figures

Scientific paper

10.1103/PhysRevA.72.034102

We calculate the corrections to the Casimir force between two metals due to the spatial dispersion of their response functions. We employ model-independent expressions for the force in terms of the optical coefficients. We express the non-local corrections to the Fresnel coefficients employing the surface $d_\perp$ parameter, which accounts for the distribution of the surface screening charge. Within a self-consistent jellium calculation, spatial dispersion increases the Casimir force significatively for small separations. The nonlocal correction has the opposite sign than previously predicted employing hydrodynamic models and assuming abruptly terminated surfaces.

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