Spacetime-varying couplings and Lorentz violation
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Open Access
- 11 December 2003
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 68 (12) , 123511
- https://doi.org/10.1103/physrevd.68.123511
Abstract
Spacetime-varying coupling constants can be associated with violations of local Lorentz invariance and CPT symmetry. An analytical supergravity cosmology with a time-varying fine-structure constant provides an explicit example. Estimates are made for some experimental constraints.Keywords
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