Possible time-variability of the fine-structure constant expected from the accelerating universe

Details Possible time-variability of the fine-structure constant expected from the accelerating universe Possible time-variability of the fine-structure constant expected from the accelerating universe

2007-09-14

arxiv.org/abs/0709.2211v2

Phys.Lett.B660:87-92,2008

Astronomy and Astrophysics

Astrophysics

9 pages, 9 figures. Revised interpretation of the theoretical fit; more recent references

Scientific paper

10.1016/j.physletb.2007.12.044

We present a theoretical calculation on the time-variability of the fine-structure constant to fit the result of the recent precise analysis of the measurement of the QSO absorption lines. We find the parameters and initial values of the scalar-tensor theory to be determined much more accurately than fitting the accelerating universe itself, but leading not to easy detections of the effect on the equation of state of the dark energy in the earlier epochs.

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