Multiple Scattering Expansion for Dielectric Media: Casimir Effect

Recent measurements of Casimir forces have provided evidence of an intricate modification of quantum fluctuations of the electromagnetic field in complex geometries. Here we introduce a multiple scattering description for Casimir interactions between bodies of arbitrary shape and material composition, admitting an expansion as a sequence of inter- and intra-body wave scatterings. Interactions in complex geometries can be computed within the current experimental resolution from typically a few wave scatterings, notably without any a priori knowledge of the scattering amplitudes of the bodies. Some first applications demonstrate the power of the approach.

  • Received 22 January 2023
  • Accepted 3 April 2023

DOI:https://doi.org/10.1103/PhysRevLett.130.200401

© 2023 American Physical Society

Statistical Physics

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