Relativistic QFT description for the interaction of a spin with a magnetic field
We analyze how nonrelativistic effective models for the magnetic coupling of a spin to the electromagnetic field (proportional to $\stackrel{^}{\mathbit{\ensuremath{\sigma}}}\ifmmode\cdot\else\textperiodcentered\fi{}\mathbit{B}$) emerge from a full quantum field theoretical description of charged fermionic fields with the quantum electromagnetic field. This allows us to keep track of relativistic corrections to the models commonly used in experimental spin physics. We discuss how this interaction compares to the usual simplified models used in relativistic quantum information.
Authors
- T. Rick Perche (ORCID: https://orcid.org/0000-0001-6655-7117)
- Ruhi Shah
- Eduardo Martín-Martínez (ORCID: https://orcid.org/0000-0002-0962-2047)
Institutions
- University of Waterloo (CA)
- Perimeter Institute (CA)
Publication Details
- Journal
- Physical review. D/Physical review. D.
- Published
- 2025-02-28
- DOI
- https://doi.org/10.1103/physrevd.111.044075
- Citations
- 1
- Primary Topic
- Quantum Electrodynamics and Casimir Effect
- Type
- article
- Field-Weighted Citation Impact
- 1.25
Funders
- Innovation, Science and Economic Development Canada
- Government of Canada
- Canada Foundation for Innovation
- Industry Canada
- Canada First Research Excellence Fund
- Ministry of Colleges and Universities
- Natural Sciences and Engineering Research Council of Canada