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arXiv · hep-ph/0311073

Couplings varying on cosmological scales and Lorentz breaking

Ralf Lehnert
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Abstract

In the context of N=4 supergravity in four dimensions, we present an exact classical solution that leads to spacetime-dependent electromagnetic couplings and discuss the ensuing Lorentz-violating effects. We comment briefly on experimental bounds.

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Ralf Lehnert. 2003-11-06. Couplings varying on cosmological scales and Lorentz breaking. https://doi.org/10.1063/1.1594395

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