Time varying α in N=8 extended Supergravity
classification
✦ hep-ph
astro-phhep-th
keywords
supergravityalphaextendedsometimeaccommodatedbeenconstant
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There has been some evidence that the fine structure "constant" $\alpha$ may vary with time. We point out that this variation can be described by a scalar field in some supergravity theory in our toy model, for instance, the N=8 extended supergravity in four dimensions which can be accommodated in M-theory.
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