scholarly journals Fine Structure Constant, Domain Walls, and Generalized Uncertainty Principle in the Universe

2011 ◽  
Vol 2011 ◽  
pp. 1-12
Author(s):  
Luigi Tedesco
Keyword(s):  
Fine Structure ◽  
Hydrogen Atom ◽  
Domain Wall ◽  
Uncertainty Principle ◽  
Ground State ◽  
Domain Walls ◽  
Generalized Uncertainty Principle ◽  
Structure Constant ◽  
Fine Structure Constant ◽  
The Universe

We study the corrections to the fine structure constant from the generalized uncertainty principle in the spacetime of a domain wall. We also calculate the corrections to the standard formula to the energy of the electron in the hydrogen atom to the ground state, in the case of spacetime of a domain wall and generalized uncertainty principle. The results generalize the cases known in literature.

scholarly journals Numerical task for orbital electron in transition subatomic structure

2021 ◽  
Author(s):  
Mikhail Ivantsov
Keyword(s):  
Fine Structure ◽  
Hydrogen Atom ◽  
Ground State ◽  
Lamb Shift ◽  
Electroweak Interaction ◽  
Structure Constant ◽  
Fine Structure Constant ◽  
Multiply Charged ◽  
Electric Interaction ◽  
Orbital Electron

Abstract The present work as part of a known task of single-electron atom has been carried out, wherein one mathematical theorem is proved. Herewith an orbital electron was modeled, for which a certain parallelism exists between the highlighted ground state of the atom and special transition states in subatomic structure. Moreover, the ground state in unambiguous solution of fine-structure constant is obtained, where first transition state at the exceptional accordance with proton nucleus can be founded. For here, it is possible to relate the hyper-fine nuclear structure like the Lamb shift of hydrogen atom. In this substantiation of the task, multiply charged states were predicted for a hypothetical nucleus, as in the higher order of meson-boson transitions. The specified approach, in the terms of electric interaction, may be beyond a scope of the existing boson classification, supposedly for the carriers of electroweak interaction.

scholarly journals CORRECTIONS TO THE FINE STRUCTURE CONSTANT IN (D+1)-DIMENSIONAL GLOBAL MONOPOLE SPACETIME

2012 ◽  
Vol 18 ◽  
pp. 25-30
Author(s):  
GEUSA DE A. MARQUES ◽  
V. B. BEZERRA
Keyword(s):  
Fine Structure ◽  
Uncertainty Principle ◽  
Generalized Uncertainty Principle ◽  
Structure Constant ◽  
Fine Structure Constant ◽  
Global Monopole

In this paper we use the Generalized Uncertainty Principle in order to obtain the corrections to the fine structure constant in (D + 1)-dimensional global monopole spacetime. We also discuss the case D = 3 corresponding to the (3+1)-dimensional global monopole spacetime.

scholarly journals New Limit on Space-Time Variations in the Proton-to-Electron Mass Ratio from Analysis of Quasar J110325-264515 Spectra

Symmetry ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 344
Author(s):  
T. D. Le
Keyword(s):  
Fine Structure ◽  
Structure Constant ◽  
Space Time ◽  
Fine Structure Constant ◽  
Electron Mass ◽  
Mass Ratio ◽  
Quasar Spectra ◽  
Time Variations ◽  
Using Data ◽  
The Universe

Astrophysical tests of current values for dimensionless constants known on Earth, such as the fine-structure constant, α , and proton-to-electron mass ratio, μ = m p / m e , are communicated using data from high-resolution quasar spectra in different regions or epochs of the universe. The symmetry wavelengths of [Fe II] lines from redshifted quasar spectra of J110325-264515 and their corresponding values in the laboratory were combined to find a new limit on space-time variations in the proton-to-electron mass ratio, ∆ μ / μ = ( 0.096 ± 0.182 ) × 10 − 7 . The results show how the indicated astrophysical observations can further improve the accuracy and space-time variations of physics constants.

scholarly journals Four direct measurements of the fine-structure constant 13 billion years ago

2020 ◽  
Vol 6 (17) ◽  
pp. eaay9672 ◽  
Author(s):  
Michael R. Wilczynska ◽  
John K. Webb ◽  
Matthew Bainbridge ◽  
John D. Barrow ◽  
Sarah E. I. Bosman ◽  
...  
Keyword(s):  
Fine Structure ◽  
Temporal Change ◽  
Structure Constant ◽  
Fine Structure Constant ◽  
Analysis Method ◽  
Weighted Mean ◽  
Near Ir ◽  
Very Large Telescope ◽  
Direct Measurements ◽  
The Universe

Observations of the redshift z = 7.085 quasar J1120+0641 are used to search for variations of the fine structure constant, a, over the redshift range 5:5 to 7:1. Observations at z = 7:1 probe the physics of the universe at only 0.8 billion years old. These are the most distant direct measurements of a to date and the first measurements using a near-IR spectrograph. A new AI analysis method is employed. Four measurements from the x-shooter spectrograph on the Very Large Telescope (VLT) constrain changes in a relative to the terrestrial value (α0). The weighted mean electromagnetic force in this location in the universe deviates from the terrestrial value by Δα/α = (αz − α0)/α0 = (−2:18 ± 7:27) × 10−5, consistent with no temporal change. Combining these measurements with existing data, we find a spatial variation is preferred over a no-variation model at the 3:9σ level.

scholarly journals Constraints on the String T-Duality Propagator from the Hydrogen Atom

Symmetry ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 1478 ◽  
Author(s):  
Michael F. Wondrak ◽  
Marcus Bleicher
Keyword(s):  
Hydrogen Atom ◽  
String Theory ◽  
State Energy ◽  
Generalized Uncertainty Principle ◽  
Structure Constant ◽  
Zero Point ◽  
Fine Structure Constant ◽  
Full Agreement ◽  
Logarithmic Term ◽  
First Time

We investigated the implications of string theory in the high-precision regime of quantum mechanics. In particular, we examined a quantum field theoretical propagator which was derived from string theory when compactified at the T-duality self-dual radius and which is closely related to the path integral duality. Our focus was on the hydrogen ground state energy and the 1 S 1 / 2 − 2 S 1 / 2 transition frequency, as they are the most precisely explored properties of the hydrogen atom. The T-duality propagator alters the photon field dynamics leading to a modified Coulomb potential. Thus, our study is complementary to investigations where the electron evolution is modified, as in studies of a minimal length in the context of the generalized uncertainty principle. The first manifestation of the T-duality propagator arises at fourth order in the fine-structure constant, including a logarithmic term. For the first time, constraints on the underlying parameter, the zero-point length, are presented. They reach down to 3.9 × 10 − 19 m and are in full agreement with previous studies on black holes.

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