arXiv:astro-ph/0212003·v1·Astrophysics
Spacetime-varying couplings and Lorentz violation
Alan Kostelecky🇺🇸 · Ralf Lehnert🇵🇹 · Malcolm Perry🇬🇧
Abstract
Spacetime-varying coupling constants can be associated with violations of local Lorentz invariance and CPT symmetry. An analytical supergravity cosmology with time-varying fine-structure constant provides an explicit example. Estimates are made for some experimental constraints.
Comments: 4 pages