Dispersion forces in inhomogeneous planarly layered media: A one-dimensional model for effective polarizabilities

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Dispersion forces such as van der Waals forces between two microscopic particles, the Casimir-Polder forces between a particle and a macroscopic object, or the Casimir force between two dielectric objects are well studied in vacuum. However, in realistic situations the interacting objects are often embedded in an environmental medium. Such a solvent influences the induced dipole interaction. With the framework of macroscopic quantum electrodynamics, these interactions are mediated via an exchange of virtual photons. Via this method the impact of a homogeneous solvent medium can be expressed as local-field corrections leading to excess polarizabilities which have previously been derived for hard boundary conditions. In order to develop a more realistic description, we investigate a one-dimensional analog system illustrating the influence of a continuous dielectric profile.


  • Johannes Fiedler
  • Fabian Spallek
  • Priyadarshini Thiyam
  • Clas Persson
  • Mathias Boström
  • Michael Walter
  • Stefan Yoshi Buhmann
Enheter & grupper
Externa organisationer
  • Albert-Ludwigs University Freiburg
  • University of Oslo
  • Norwegian University of Science and Technology
  • Fraunhofer IWM

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Teoretisk kemi
  • Annan fysik
TidskriftPhysical Review A
StatusPublished - 2019 jun 25
Peer review utfördJa