Δα/α FROM QSO ABSORPTION LINES DRIVEN BY AN OSCILLATING SCALAR FIELD

2005 ◽  
Vol 14 (03n04) ◽  
pp. 677-685 ◽  
Author(s):  
YASUNORI FUJII ◽  
SHUNTARO MIZUNO
Keyword(s):  
Fine Structure ◽  
Scalar Field ◽  
Structure Constant ◽  
Oscillatory Behavior ◽  
Absorption Lines ◽  
Fine Structure Constant ◽  
Time Variability ◽  
The Past

The new result on the QSO absorption lines from the 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.

scholarly journals HOW STRONGLY DOES DATING METEORITES CONSTRAIN THE TIME-DEPENDENCE OF THE FINE-STRUCTURE CONSTANT?

2005 ◽  
Vol 20 (32) ◽  
pp. 2417-2434 ◽  
Author(s):  
YASUNORI FUJII ◽  
AKIRA IWAMOTO
Keyword(s):  
Fine Structure ◽  
Scalar Field ◽  
Time Dependence ◽  
Structure Constant ◽  
Absorption Lines ◽  
Fine Structure Constant ◽  
Time Variability ◽  
Related Literature ◽  
The Past

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 is different in principle from searching directly for the traces in the past, as in the Oklo phenomenon and the QSO absorption lines. In the related literature, we still find some arguments not necessarily consistent with this difference to be taken properly into account. It does not immediately follow that any model-dependent approaches are useless in practice, though we cannot help suspecting that dating meteorites is no match for the Oklo and the QSO in probing the time-variability of the fine-structure constant, at this moment. Some of the relevance to the QSO data particularly in terms of the scalar field will be discussed.

scholarly journals Accelerating universe and the time-dependent fine-structure constant

2009 ◽  
Vol 5 (H15) ◽  
pp. 302-302
Author(s):  
Yasunori Fujii
Keyword(s):  
Fine Structure ◽  
Scalar Field ◽  
Structure Constant ◽  
Theoretical Background ◽  
Point Of View ◽  
Fine Structure Constant ◽  
Time Variability ◽  
Accelerating Universe ◽  
Tensor Theory ◽  
The Right

I start with assuming a gravitational scalar field as the dark-energy supposed to be responsible for the accelerating universe. Also from the point of view of unification, a scalar field implies a time-variability of certain “constants” in Nature. In this context I once derived a relation for the time-variability of the fine-structure constant α: Δα/α =ζ Ƶ(α/π) Δσ, where ζ and Ƶ are the constants of the order one, while σ on the right-hand side is the scalar field in action in the accelerating universe. I use the reduced Planckian units with c=ℏ =MP(=(8π G)−1/2)=1. I then compared the dynamics of the accelerating universe, on one hand, and Δα/α derived from the analyses of QSO absorption lines, Oklo phenomenon, also different atomic clocks in the laboratories, on the other hand. I am here going to discuss the theoretical background of the relation, based on the scalar-tensor theory invented first by Jordan in 1955.

A FIVE DIMENSIONAL MODEL OF EFFECTIVE GRAVITATIONAL AND FINE-STRUCTURE CONSTANTS

2002 ◽  
Vol 17 (29) ◽  
pp. 4317-4323 ◽  
Author(s):  
J. P. MBELEK ◽  
M. LACHIÈZE-REY
Keyword(s):  
Fine Structure ◽  
Scalar Field ◽  
Gravitational Constant ◽  
Structure Constant ◽  
Fine Structure Constant ◽  
Five Dimensional Model ◽  
Bulk Scalar Field ◽  
Structure Constants ◽  
Good Agreement ◽  
Kaluza Klein

It is shown that the coupling of the Kaluza-Klein (KK) internal scalar field both to an external stabilizing bulk scalar field and to the geomagnetic field may explain the observed dispersion in laboratory measurements of the (effective) gravitational constant. Except the PTB 95 value, the predictions are found in good agreement with all of the experimental data. The cosmological variation of the fine-structure constant is also addressed.

scholarly journals PRIMORDIAL SPACETIME FOAM AS AN ORIGIN OF COSMOLOGICAL MATTER–ANTIMATTER ASYMMETRY

2001 ◽  
Vol 10 (06) ◽  
pp. 811-823 ◽  
Author(s):  
D. V. AHLUWALIA ◽  
M. KIRCHBACH
Keyword(s):  
Fine Structure ◽  
Standard Deviation ◽  
Parallel Transport ◽  
Structure Constant ◽  
Fine Structure Constant ◽  
The Past ◽  
Related Notion ◽  
Local Gauge Invariance ◽  
Spacetime Foam ◽  
Spacetime Fluctuations

The possibility is raised that the observed cosmological matter–antimatter asymmetry may reside in asymmetric spacetime fluctuations and their interplay with the Stückelberg–Feynman interpretation of antimatter. The presented thesis also suggests that the effect of spacetime fluctuations is to diminish the fine structure constant in the past. Recent studies of the QSO absorption lines provide a 4.1 standard deviation support for this prediction. Our considerations suggest that in the presence of spacetime fluctuations, the principle of local gauge invariance, and the related notion of parallel transport, must undergo fundamental changes.

scholarly journals Further constraints on variation of the fine-structure constant from alkali-doublet QSO absorption lines

2001 ◽  
Vol 327 (4) ◽  
pp. 1237-1243 ◽  
Author(s):  
M. T. Murphy ◽  
J. K. Webb ◽  
V. V. Flambaum ◽  
J. X. Prochaska ◽  
A. M. Wolfe
Keyword(s):  
Fine Structure ◽  
Structure Constant ◽  
Absorption Lines ◽  
Fine Structure Constant
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