Cosmological constraints on $\Lambda(\alpha)$CDM models with time-varying fine structure constant - INSPIRE

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Cosmological constraints on $\Lambda(\alpha)$ CDM models with time-varying fine structure constant

Jin-Jun Zhang
(
- Shanxi Normal U.
)
,
Lu Yin
(
- Taiwan, Natl. Tsing Hua U.
)
,
Chao-Qiang Geng
(
- Taiwan, Natl. Tsing Hua U. and
- NCTS, Hsinchu and
- Shanxi Normal U.
)

Sep 11, 2018

10 pages

Published in:

Annals Phys. 397 (2018) 400-409

Published: Oct, 2018

e-Print:

1809.04218 [astro-ph.CO]

DOI:

10.1016/j.aop.2018.08.015 (publication)

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Abstract: (Elsevier)

We study the Λ(α) CDM models with Λ(α) being a function of the time-varying fine structure constant α . We give a close look at the constraints on two specific Λ(α) CDM models with one and two model parameters, respectively, based on the cosmological observational measurements along with 313 data points for the time-varying α . We find that the model parameters are constrained to be around 10−4 , which are similar to the results discussed previously but more accurately.

Note:

16 pages, 4 figures, published in Annals of Physics 397 (2018) 400-409

Cosmological constant
Time-varying fine structure constant
LCDM
Cosmological constraint
fine structure: time dependence
fundamental constant: fine structure
cosmological constant: time dependence
dark matter: parametrization

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Figures(7)

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