Theoretical topics in spacetime-symmetry violations
Ralf Lehnert
TL;DR
This paper reviews the theoretical and phenomenological aspects of Lorentz and CPT violation in electrodynamics, focusing on Chern-Simons extensions and their cosmological origins within supergravity, highlighting symmetry considerations and vacuum Cherenkov effects.
Contribution
It introduces a framework connecting supergravity cosmological solutions to Lorentz- and CPT-violating electrodynamics, emphasizing symmetry analysis and phenomenological implications.
Findings
Cosmological solutions can generate Chern-Simons electrodynamics.
Remaining spacetime symmetries are analyzed.
Vacuum Cherenkov effect is discussed as a phenomenological consequence.
Abstract
The Lorentz- and CPT-violating Chern-Simons extension of electrodynamics is considered. In the context of N=4 supergravity in four spacetime dimensions, it is argued that cosmological solutions can generate this extension. Within Chern-Simons electrodynamics, theoretical and phenomenological topics are reviewed that concern the number of the remaining spacetime symmetries and the vacuum Cherenkov effect, respectively.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.