$\Delta\alpha/\alpha$ from QSO absorption lines driven by an oscillating scalar field

@article{Fujii2004DeltaalphaalphaFQ,
  title={\$\Delta\alpha/\alpha\$ from QSO absorption lines driven by an oscillating scalar field},
  author={Yasunori Fujii and Shuntaro Mizuno},
  journal={arXiv: Astrophysics},
  year={2004}
}
The new result on the QSO absorption lines from VLT-UVES sample is compared with the past reports on the time-variability of the fine-structure "constant" derived from the Keck/HIRES observation, on the basis of an oscillatory behavior of the scalar field supposed to be responsible for the cosmological acceleration. 
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References

SHOWING 1-10 OF 69 REFERENCES
Time-variability of the fine-structure constant expected from the Oklo constraint and the QSO absorption lines
Abstract The data from the QSO absorption lines indicating a nonzero time-variability of the fine-structure constant has been re-analyzed on the basis of a “damped-oscillator” fit, as motivated byExpand
Quintessence Cosmology and Varying $\alpha$
If the reported measurements of the time variation of the fine structure constant from observations of distant QSOs are correct, combined with the Oklo limit they would strongly constrain the classExpand
Re/Os constraint on the time variability of the fine-structure constant.
We argue that the accuracy by which the isochron parameters of the decay 187Re-->187Os are determined by dating iron meteorites may constrain the possible time dependence of the decay rate and henceExpand
Limits on the time variation of the electromagnetic fine-structure constant in the low energy limit from absorption lines in the spectra of distant quasars.
TLDR
A detailed many-multiplet analysis performed on a new sample of Mg ii systems observed in high quality quasar spectra obtained using the Very Large Telescope finds that it is the time variation of alpha that forms the strongest constraint obtained based on high redshift quasar absorption line systems. Expand
Probing the cosmological variation of the fine - structure constant: Results based on VLT - UVES sample
Development of fundamental physics relies on the constancy of various fundamental quantities such as the fine- structure constant. Detecting or constraining the possible time variations of theseExpand
Crossover quintessence and cosmological history of fundamental “constants”
Abstract Crossover quintessence predicts that the time variation of fundamental couplings is substantially faster at redshift z ≈2 than over the past few billion years. This could reconcile theExpand
Varying alpha in a more realistic Universe
Abstract We study the space–time evolution of the fine structure constant, α , inside evolving spherical overdensities in a lambda-CDM Friedmann universe using the spherical infall model. We showExpand
Astrophysics: The inconstant constant?
TLDR
An earlier analysis of radiation from distant quasars suggested the value of the fine-structure constant changed over the history of the Universe, but a new analysis says no. Expand
The nuclear interaction at Oklo 2 billion years ago
Abstract We re-examine the effort to constrain the time variability of the coupling constants of the fundamental interactions by studying the anomalous isotopic abundance of Sm observed at theExpand
Solving the coincidence problem: tracking oscillating energy.
TLDR
It is proposed that the dark energy has periodically dominated in the past so that its preponderance today is natural, and this paradigm is illustrated with a model potential and its predictions are consistent with all observations. Expand
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5
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