Publications Repository - Helmholtz-Zentrum Dresden-Rossendorf
2 PublicationsGinzburg effect in a dielectric medium with dispersion and dissipation
Lang, S.; Sauerbrey, R.; Schützhold, R.; Unruh, W.
As a quantum analog of Cherenkov radiation, an inertial photon detector moving through a medium with constant refractive index n may perceive the electromagnetic quantum fluctuations as real photons if its velocity v exceeds the medium speed of light c/n. For dispersive Hopfield type media, we find this Ginzburg effect to extend to much lower v because the phase velocity of light is very small near the medium resonance. In this regime, however, dissipation effects become important. Via an extended Hopfield model, we present a consistent treatment of quantum fluctuations in dispersive and dissipative media and derive the Ginzburg effect in such systems. Finally, we propose an experimental test.
Keywords: dielectric media; dispersion and dissipation; quantum vacuum phenomena; Ginzburg effect; inertial atom; spontaneous excitation
-
Contribution to WWW
arXiv:2108.10693 [quant-ph]: https://arxiv.org/abs/2108.10693 -
Physical Review Research 4(2022)3, 033074
DOI: 10.1103/PhysRevResearch.4.033074
ISSN: 2643-1564
Cited 1 times in Scopus
Permalink: https://www.hzdr.de/publications/Publ-33124