Abstract
AbstractExploring variations in fundamental physics constants across cosmological space-time is of substantial importance in both theoretical and experimental physics. A crucial means of investigating such variations involves comparing laboratory measurements with astrophysical observations. In the present study, we employ a combination of laboratory data and observed Lyman transitions of $$H_2$$
H
2
identified in the white dwarf star GD133. Through this examination, we find the temporal variation of the gravitational constant, $${{\dot{G}}}/{G} = (0.016 \pm 0.098) \times 10^{-15}~\text {year}^{-1}$$
G
˙
/
G
=
(
0.016
±
0.098
)
×
10
-
15
year
-
1
with a gravitational potential $$\phi \approx 10^4,$$
ϕ
≈
10
4
,
and an average total redshift of $$H_2,$$
H
2
,
$$z_{abs} =0.0001820(10).$$
z
abs
=
0.0001820
(
10
)
.
This newly determined constraint on the time variation of G serves as an important tool for advancing discussions within unified theories.
Publisher
Springer Science and Business Media LLC
Cited by
1 articles.
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