2010/10/31 by M. T. Homer Reid, Jacob White, Steven G. Johnson · 2 citations
Physics and Astronomy · #Cosmology and Gravitation Theories #Experimental and Theoretical Physics Studies #Quantum Electrodynamics and Casimir Effect #quant-ph
paper · pdf · doi:10.1103/physreva.84.010503
published as Physical Review A, Vol. 84, No. 1, 010503(R) (2011)
openalex publication_date 2011/07/21 · arxiv created 2011/10/20 · arxiv updated 2011/10/21 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30
We extend a recently introduced method for computing Casimir forces between arbitrarily shaped metallic objects [M. T. H. Reid et al., Phys. Rev. Lett. 103 040401 (2009)] to allow treatment of objects with arbitrary material properties, including imperfect conductors, dielectrics, and magnetic materials. Our original method considered electric currents on the surfaces of the interacting objects; the extended method considers both electric and magnetic surface current distributions, and obtains the Casimir energy of a configuration of objects in terms of the interactions of these effective surface currents. Using this new technique, we present the first predictions of Casimir interactions in several experimentally relevant geometries that would be difficult to treat with any existing method. In particular, we investigate Casimir interactions between dielectric nanodisks embedded in a dielectric fluid; we identify the threshold surface-surface separation at which finite-size effects become relevant, and we map the rotational energy landscape of bound nanoparticle diclusters.