1 research outputs found
Testing theories that predict time variation of fundamental constants
We consider astronomical and local bounds on time variation of fundamental
constants to test some generic Kaluza-Klein-like models and some particular
cases of Beckenstein theory. Bounds on the free parameters of the different
theories are obtained. Furthermore, we find that none of the proposed models,
is able to explain recent results [Webb99,Webb00] claiming an observed
variation of the fine structure constant from quasar absorption systems at
redshifts .Comment: 18 pages, 2 figures, new data adde