Phys. Rev. D 68, 123511 (2003) [5 pages]Spacetime-varying couplings and Lorentz violationReceived 2 December 2002; published 11 December 2003 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. © 2003 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.68.123511
DOI:
10.1103/PhysRevD.68.123511
PACS:
98.80.Cq, 11.30.Cp, 11.30.Er
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