Switching the sign of the Casimir force between two perfect electromagnetic conductor spheres
- For nonreciprocal objects in vacuum, the Casimir interaction can become repulsive. Here, we present a comprehensive study for idealized nonreciprocal materials known as perfect electromagnetic conductors (PEMC). The system consists of two spheres made of different PEMC materials, including the plane-sphere geometry as a particular case. The sign of the Casimir force does not only depend on the distance between the spheres and their geometric parameters but can be controlled by adjusting the temperature. A repulsive Casimir interaction at small distances allows for stable equilibrium configurations of the spheres. A sum rule previously derived for the plane-plane geometry at zero temperature is violated in general, if at least one plane is replaced by a sphere.
Author: | Tanja SchogerORCiD, Gert-Ludwig IngoldORCiDGND |
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URN: | urn:nbn:de:bvb:384-opus4-1130316 |
Frontdoor URL | https://opus.bibliothek.uni-augsburg.de/opus4/113031 |
ISSN: | 2469-9934OPAC |
Parent Title (English): | Physical Review A |
Publisher: | American Physical Society |
Type: | Article |
Language: | English |
Year of first Publication: | 2024 |
Publishing Institution: | Universität Augsburg |
Release Date: | 2024/05/14 |
Volume: | 109 |
Issue: | 5 |
First Page: | 052815 |
DOI: | https://doi.org/10.1103/PhysRevA.109.052815 |
Institutes: | Mathematisch-Naturwissenschaftlich-Technische Fakultät |
Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Physik | |
Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Physik / Lehrstuhl für Theoretische Physik I | |
Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
Licence (German): | Deutsches Urheberrecht |