Abstract
We show that using the modified form of the Dirac Hamiltonian as suggested by Bekenstein does not affect the analysis of QSO data pertaining to a measurement of variation. We obtain the present time limit on Bekenstein’s parameter, , from the measurement of the hydrogen fine structure using a value of obtained from different experiments.
- Received 1 March 2004
DOI:https://doi.org/10.1103/PhysRevA.70.044104
©2004 American Physical Society