Limits on a Dynamically Varying Fine Structure Constant
Astrophysics
2009-08-18 v3 High Energy Physics - Theory
Atomic Physics
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, tan^{2}chi =(0.2 \pm 0.7)\times10^{-6}, from the measurement of the hydrogen 2p fine structure using value of alpha obtained from different experiments.
Cite
@article{arxiv.astro-ph/0407011,
title = {Limits on a Dynamically Varying Fine Structure Constant},
author = {E. J. Angstmann and V. V. Flambaum and S. G. Karshenboim},
journal= {arXiv preprint arXiv:astro-ph/0407011},
year = {2009}
}
Comments
references added, typos corrected