Casimir-Polder interaction for gently curved surfaces

Giuseppe Bimonte 1 Thorsten Emig 2 Mehran Kardar 3

Physical Review D, American Physical Society, 2014, 90, pp.081702

We use a derivative expansion for gently curved surfaces to compute the leading and the next-to-leading curvature corrections to the Casimir-Polder interaction between a polarizable small particle and a non-planar surface. While our methods apply to any homogeneous and isotropic surface, explicit results are presented here for perfect conductors. We show that the derivative expansion of the Casimir-Polder potential follows from a resummation of its perturbative series, for small in-plane momenta. We consider the retarded, non-retarded and classical high temperature limits.

  • 1. INFN, Sezione di Napoli - Istituto Nazionale di Fisica Nucleare, Sezione di Napoli
  • 2. LPTMS - Laboratoire de Physique Théorique et Modèles Statistiques
  • 3. Department of Physics