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 |
|---|---|
| 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 |
| Date of Publication (online): | 2024/05/14 |
| 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 |
