New Limits on Local Lorentz Invariance from Hg and Cs Magnetometers
Abstract
The relative frequency of Hg and Cs mgnetometers is monitored as a function of the orientation of the applied magnetic field with respect to the fixed stars. The observed stability of the relative frequency limits electron and nucleon local Lorentz invariance violating effects to less than 200 \ensuremath{\mu}Hz and 110 nHz, respectively. These results represent an improvement over the best published results by an order of magnitude for electron effects and by a factor of 240 for nuclear effects. The result also sets an upper limit of 200 eV on the Fermi level of a degenerate remnant neutrino background.
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A stronger bound of ΛNC > 5 × 10^14 GeV on the non-commutativity scale can be derived from clock comparison experiments with Cs/Hg magnetometers.
“A stronger bound of ΛNC > 5 × 1014 GeV [218] on the non-commutativity scale can be derived from clock comparison experiments with Cs/Hg magnetometers [46] (see Section 5.2).”
From Modern Tests of Lorentz Invariance (2005) · cites this paper as [46]
Similar proton bounds have been estimated from the Berglund et al. experiment using the Schmidt model for nuclear structure, in which an individual nucleon is assumed to carry the entire nuclear angular momentum.
“Similar bounds have been estimated [175] from the experiment of Berglund et al. [46] using the Schmidt model [251] for nuclear structure, where an individual nucleon is assumed to carry the entire nuclear angular momentum.”
From Modern Tests of Lorentz Invariance (2005) · cites this paper as [46]
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References 14 · Cited by 151
- Authors
- Berglund, C. J., Hunter, L. R., Krause, Jr., Prigge, E. O., Ronfeldt, M. S., & Lamoreaux, S. K.
- Affiliations
- Amherst College (US)
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 1995-09-04
- Volume
- 75
- Issue
- 10
- Pages
- 1879-1882
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W1988023131
- Cited by
- 151
- References
- 14
- Citations by year
- 2026: 1 · 2025: 2 · 2024: 2 · 2023: 2 · 2022: 1 · 2021: 4 · 2020: 2 · 2019: 4 · 2018: 5 · 2017: 4 · 2016: 3 · 2015: 2 · 2014: 5 · 2013: 7 · 2012: 4
- FWCI
- 1.17
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Physical Review Letters (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Physics and Astronomy › Statistical and Nonlinear Physics › Noncommutative and Quantum Gravity Theories
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Atomic and Subatomic Physics Research
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Relativity and Gravitational Theory
- Keywords
- local Lorentz invariance, Lorentz violation, cesium magnetometer, relative frequency stability, magnetic field orientation, fixed stars
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