# $\Delta\alpha/\alpha$ 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}
}
• Published 2004
• Physics
• arXiv: Astrophysics
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.
9 Citations

#### Figures from this paper

Revised fits to Δα/α in consistency with the accelerating universe
An attempt is made for a new type of analysis of the time-variability of the fine-structure constant trying to fit the most recent result from the laboratory measurements, the Oklo constraint and theExpand
Possible time-variability of the fine-structure constant expected from the accelerating universe
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 findExpand
Most precise single redshift bound to Delta alpha/alpha
Verification of theoretical predictions of an oscillating behavior of the fine-structure constant alpha with cosmic time requires high precision Delta alpha/alpha measurements at individualExpand
Time Variation of Fine Structure Constant and Proton-Electron Mass Ratio with Quintessence
Recent astrophysical observations of quasar absorption systems indicate that the fine structure constant α and the proton-electron mass ratio μ may have evolved through the history of the universe.Expand
Environmental dependence of masses and coupling constants
• Physics
• 2008
We construct a class of scalar field models coupled to matter that lead to the dependence of masses and coupling constants on the ambient matter density. Such models predict a deviation of couplingsExpand
HOW STRONGLY DOES DATING METEORITES CONSTRAIN THE TIME-DEPENDENCE OF THE FINE-STRUCTURE CONSTANT?
• Physics
• 2005
We review our argument on the nature of the so-called meteorite constraint on the possible time-dependence of the fine-structure constant, emphasizing that dating meteorites at the present time isExpand
Where are the walls? Spatial variation in the fine-structure constant
• Physics
• 2012
The reported spatial variation in the fine-structure constant at high redshift, if physical, could be due to the presence of dilatonic domains, and one or more domain walls inside our horizon. AnExpand
Accelerating Universe and the Scalar-Tensor Theory
• Y. Fujii
• Physics, Computer Science
• Entropy
• 2012
To understand the accelerating universe discovered observationally in 1998, we develop the scalar-tensor theory of gravitation originally due to Jordan, extended only minimally. The unique role ofExpand
Dynamics of dark energy
• Physics
• 2006
We review in detail a number of approaches that have been adopted to try and explain the remarkable observation of our accelerating universe. In particular we discuss the arguments for and recentExpand

#### 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 $\alpha$
• Physics
• 2001
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.
• Physics, Medicine
• Physical review letters
• 2003
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.
• Physics, Medicine
• Physical review letters
• 2004
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
• Physics
• 2004
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
• Physics
• 2004
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?
• Physics, Medicine
• Nature
• 2004
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.
• Physics, Medicine
• Physical review letters
• 2000
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