# Download Casimir force in non-planar geometric configurations by Cho S.N. PDF

By Cho S.N.

The Casimir strength for charge-neutral, ideal conductors of non-planar geometric configurations were investigated. The configurations have been: (1) the plate-hemisphere, (2) the hemisphere-hemisphere and (3) the round shell. The ensuing Casimir forces for those actual preparations were discovered to be appealing. The repulsive Casimir strength came across via Boyer for a round shell is a unique case requiring stringent fabric estate of the field, in addition to the explicit boundary stipulations for the wave modes in and out of the sector. the mandatory standards indetecting Boyer's repulsive Casimir strength for a sphere are mentioned on the finish of this thesis.

Similar geometry and topology books

L²-invariants: theory and applications to geometry and K-theory

In algebraic topology a few classical invariants - resembling Betti numbers and Reidemeister torsion - are outlined for compact areas and finite staff activities. they are often generalized utilizing von Neumann algebras and their lines, and utilized additionally to non-compact areas and endless teams. those new L2-invariants comprise very attention-grabbing and novel details and will be utilized to difficulties coming up in topology, K-Theory, differential geometry, non-commutative geometry and spectral idea.

Additional resources for Casimir force in non-planar geometric configurations

Sample text

5)  1,2 i=1 Λ1,3 = cos θ1 , where ri is the hemisphere radius, θ1 and φ1 are the polar and azimuthal angles respectively of the first reflection point R 1 . The subscript i of ri denotes “inner radius” and it is not a summation index. 5) are combined as 3 r0,i + ξ1 k −1 1 k1,i − ri Λ1,i eˆi = 0. 6) i=1 Because the basis vectors eˆi are independent of each other, the above relations are only satisfied when each coefficients 45 A. Reflection Points on the Surface of a Resonator of eˆi vanish independently, r0,i + ξ1 k −1 1 k1,i − ri Λ1,i = 0, i = 1, 2, 3.

2, the temperature of the two hemispheres would rise indefinitely over time. This does not happen with ordinary conductors. This suggests that Boyer’s conducting material, of which his sphere is made, is completely hypothetical. Precisely because of this material assumption, Boyer’s Casimir force is repulsive. For the moment, let us relax the stringent Boyer’s material property for the hemispheres to that of ordinary conductors. For the hemispheres made of ordinary conducting materials, there would result a series of reflections in one hemisphere cavity due to those radiations entering the cavity from nearby hemisphere.

5 are assumed to be simple cubical. Normally, the dimension of conductors considered in Casimir force experiment is in the ranges of microns. When this is compared with the size of the laboratory boundaries such as the walls, the walls of the laboratory can be treated as a set of infinite parallel plates and the vacuum-fields inside the the laboratory can be treated as simple plane waves with impunity. The presence of laboratory boundaries induce reflection of energy flow similar to that between the two parallel plate arrangement.