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arXiv · 1906.01488

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

Johannes Fiedler·Fabian Spallek·Priyadarshini Thiyam·Clas Persson·Mathias Boström·Michael Walter·Stefan Yoshi Buhmann
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Abstract

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 polarisabilities which have previously been derived for hard boundary conditions. In order to develop a more realistic description, we investigate on a one-dimensional analog system illustrating the influence of a continuous dielectric profile.

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Johannes Fiedler, Fabian Spallek, Priyadarshini Thiyam, Clas Persson, Mathias Boström, Michael Walter, Stefan Yoshi Buhmann. 2019-06-04. Dispersion forces in inhomogeneous planarly layered media: A one-dimensional model for effective polarisabilities. https://arxiv.org/abs/1906.01488

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