Skip to content

Casimir interaction between a plate and a cylinder

T. Emig, R. L. Jaffe, M. Kardar, A. Scardicchio

cond-mat.stat-mecharXiv:cond-mat/0601055

Abstract

We find the exact Casimir force between a plate and a cylinder, a geometry intermediate between parallel plates, where the force is known exactly, and the plate--sphere, where it is known at large separations. The force has an unexpectedly weak decay L/(H3 (H/R)) at large plate--cylinder separations H (L and R are the cylinder length and radius), due to transverse magnetic modes. Path integral quantization with a partial wave expansion additionally gives a qualitative difference for the density of states of electric and magnetic modes, and corrections at finite temperatures.

Create a lesson