Limits on a Dynamically Varying Fine Structure Constant
Abstract
We show that using the modified form of the Dirac Hamiltonian as suggested by Bekenstein, does not affect the analysis in [1-4] of QSO data pertaining to a measurement of alpha variation. We obtain the present time limit on Bekenstein's parameter, tan2chi =(0.2 0.7)×10-6, from the measurement of the hydrogen 2p fine structure using value of alpha obtained from different experiments.
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