Casimir-Polder interaction between a polarizable particle and a plate with a hole

Eberlein, Claudia and Zietal, Robert (2011) Casimir-Polder interaction between a polarizable particle and a plate with a hole. Physical Review A, 83 (5). 052514-1-052514-4. ISSN 1050-2947

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Abstract

We determine exactly the nonretarded Casimir-Polder interaction between a neutral but polarizable particle and a perfectly reflecting sheet containing a circular hole. The calculation reveals a strong dependence of the interaction on the orientation of the particle's electric dipole moment with respect to the surface. For a dipole moment that is polarized perpendicularly to the surface, the interaction potential has two saddle points lying above and below the plane of the surface on a line through the center of the aperture. For a dipole moment that is polarized parallel to the surface, there is only one saddle point right in the middle of the aperture. Provided the particles' motion could be confined to a line through the middle of the aperture, this effect could potentially be used for population-sensitive trapping of particles.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Depositing User: Claudia Eberlein
Date Deposited: 06 Feb 2012 19:16
Last Modified: 13 Mar 2017 23:50
URI: http://sro.sussex.ac.uk/id/eprint/19819

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