Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2008-06-17
Phys.Rev.Lett.101:160402,2008
Physics
High Energy Physics
High Energy Physics - Theory
4 pages, 3 figures
Scientific paper
10.1103/PhysRevLett.101.160402
In earlier papers we have applied multiple scattering techniques to calculate Casimir forces due to scalar fields between different bodies described by delta function potentials. When the coupling to the potentials became weak, closed-form results were obtained. We simplify this weak-coupling technique and apply it to the case of tenuous dielectric bodies, in which case the method involves the summation of van der Waals (Casimir-Polder) interactions. Once again exact results for finite bodies can be obtained. We present closed formulas describing the interaction between spheres and between cylinders, and between an infinite plate and a retangular slab of finite size. For such a slab, we consider the torque acting on it, and find non-trivial equilibrium points can occur.
Milton Kimball A.
Parashar Prachi
Wagner Jef
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