Material Dependence of the Wire-Particle Casimir Interaction

E. Noruzifar 1, P. Rodriguez-Lopez 2, T. Emig 3, R. Zandi 1

Physical Review A 87 (2013) 042504

We study the Casimir interaction between a metallic cylindrical wire and a metallic spherical particle by employing the scattering formalism. At large separations, we derive the asymptotic form of the interaction. In addition, we find the interaction between a metallic wire and an isotropic atom, both in the non-retarded and retarded limits. We identify the conditions under which the asymptotic Casimir interaction does not depend on the material properties of the metallic wire and the particle. Moreover, we compute the exact Casimir interaction between the particle and the wire numerically. We show that there is a complete agreement between the numerics and the asymptotic energies at large separations. For short separations, our numerical results show good agreement with the proximity force approximation.

  • 1 : Department of Physics and Astronomy
    University of California, Riverside
  • 2 : Departamento de Fisica Aplicada
    Universidad Compiutense
  • 3 : Laboratoire de Physique Théorique et Modèles Statistiques (LPTMS)
    CNRS : UMR8626 – Université Paris XI - Paris Sud