A study of space–time variation of the gravitational constant using high-resolution quasar spectra

The possibility of motivational probes variations in dimensionless fundamental constants like the fine-structure constant, the proton-to-electron mass ratio, and the gravitational constant could provide a significant test of grand unification theories (GUTs). The best way of probing these variations...

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Bibliographic Details
Published in:General relativity and gravitation 2021-04, Vol.53 (4), Article 37
Main Author: Le, T. D.
Format: Article
Language:English
Subjects:
Astronomy
Astrophysics and Cosmology
Classical and Quantum Gravitation
Differential Geometry
Electron mass
Gravitational constant
Gravity
High resolution
Mathematical and Computational Physics
Physics
Physics and Astronomy
Quantum Physics
Quasars
Relativity Theory
Research Article
Theoretical
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Summary:The possibility of motivational probes variations in dimensionless fundamental constants like the fine-structure constant, the proton-to-electron mass ratio, and the gravitational constant could provide a significant test of grand unification theories (GUTs). The best way of probing these variations would be based on quasar absorption lines, which allow to test them directly at any regions or epochs of the universe. Using the high-resolution quasar spectra of J110325-264515 , we find an upper limit on the temporal variation of G ˙ / G = 5.3 ± 6.0 × 10 - 14 year - 1 . The constraints coming from this study will open new physical phenomena beyond the Standard Model that enables to check for the GUTs.
ISSN:0001-7701
1572-9532
DOI:10.1007/s10714-021-02803-5