Casimir interaction between two concentric cylinders: exact versus semiclassical results

Physics – Quantum Physics

Scientific paper

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28 pages, 5 figures included

Scientific paper

10.1103/PhysRevA.67.013807

The Casimir interaction between two perfectly conducting, infinite, concentric cylinders is computed using a semiclassical approximation that takes into account families of classical periodic orbits that reflect off both cylinders. It is then compared with the exact result obtained by the mode-by-mode summation technique. We analyze the validity of the semiclassical approximation and show that it improves the results obtained through the proximity theorem.

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