Spinor fields in general Newton-Cartan backgrounds
Abstract
We give a covariant construction of Lagrangians for spinor fields in generic Newton-Cartan backgrounds. A non-relativistic Dirac/Levy-Leblond operator and the associated fields are obtained from relativistic analogues by a limiting procedure. The relativistic symmetries induce the complete set of non-relativistic symmetries, including Milne boosts and local Galilean transformations. The resulting Levy-Leblond operator includes non-minimal couplings to the Newton-Cartan structure as well as to the gauge field, and with these couplings it transforms covariantly. Phenomenologically, this fixes the gyromagnetic ratio to $g=1$. Three-dimensional spacetimes are an exception: generic $$g$$ is possible but results in modified Milne transformations, which - upon gauge fixing - reproduces the anomalous diffeomorphisms found in earlier approaches.
- Authors:
-
- Univ. of Washington, Seattle, WA (United States)
- Publication Date:
- Research Org.:
- Univ. of Washington, Seattle, WA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- OSTI Identifier:
- 1595198
- Alternate Identifier(s):
- OSTI ID: 1234102
- Grant/Contract Number:
- SC0011637
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review. D, Particles, Fields, Gravitation and Cosmology
- Additional Journal Information:
- Journal Volume: 92; Journal Issue: 12; Journal ID: ISSN 1550-7998
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Citation Formats
Fuini, John F., Karch, Andreas, and Uhlemann, Christoph F. Spinor fields in general Newton-Cartan backgrounds. United States: N. p., 2015.
Web. doi:10.1103/PhysRevD.92.125036.
Fuini, John F., Karch, Andreas, & Uhlemann, Christoph F. Spinor fields in general Newton-Cartan backgrounds. United States. https://doi.org/10.1103/PhysRevD.92.125036
Fuini, John F., Karch, Andreas, and Uhlemann, Christoph F. Wed .
"Spinor fields in general Newton-Cartan backgrounds". United States. https://doi.org/10.1103/PhysRevD.92.125036. https://www.osti.gov/servlets/purl/1595198.
@article{osti_1595198,
title = {Spinor fields in general Newton-Cartan backgrounds},
author = {Fuini, John F. and Karch, Andreas and Uhlemann, Christoph F.},
abstractNote = {We give a covariant construction of Lagrangians for spinor fields in generic Newton-Cartan backgrounds. A non-relativistic Dirac/Levy-Leblond operator and the associated fields are obtained from relativistic analogues by a limiting procedure. The relativistic symmetries induce the complete set of non-relativistic symmetries, including Milne boosts and local Galilean transformations. The resulting Levy-Leblond operator includes non-minimal couplings to the Newton-Cartan structure as well as to the gauge field, and with these couplings it transforms covariantly. Phenomenologically, this fixes the gyromagnetic ratio to $g=1$. Three-dimensional spacetimes are an exception: generic $g$ is possible but results in modified Milne transformations, which - upon gauge fixing - reproduces the anomalous diffeomorphisms found in earlier approaches.},
doi = {10.1103/PhysRevD.92.125036},
journal = {Physical Review. D, Particles, Fields, Gravitation and Cosmology},
number = 12,
volume = 92,
place = {United States},
year = {Wed Dec 30 00:00:00 EST 2015},
month = {Wed Dec 30 00:00:00 EST 2015}
}
Web of Science
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