Observational Constraints on Varying Alpha in A（α）CDM Cosmology
In this work, we consider the so-called A（α）CDM cosmology with A α-6 while the fine-structure ＂constant＂ a is varying. In this scenario, the accelerated expansion of the universe is driven by the cosmological ＂constant＂ A （equivalently the vacuum energy）, and the varying a is driven by a subdominant...
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| Published in | 理论物理通讯：英文版 Vol. 67; no. 11; pp. 632 - 640 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
2017
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| Online Access | Get full text |
| ISSN | 0253-6102 |
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| Summary: | In this work, we consider the so-called A（α）CDM cosmology with A α-6 while the fine-structure ＂constant＂ a is varying. In this scenario, the accelerated expansion of the universe is driven by the cosmological ＂constant＂ A （equivalently the vacuum energy）, and the varying a is driven by a subdominant scalar field φ coupling with the electromagnetic field. The observationM constraints on the varying a and A α-6 models with various couplings By （φ） between the subdominant scalar field φ and the electromagnetic field are considered. |
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| Bibliography: | Hao Wei and Dong-Ze Xue （ School of Physics, Beijing Institute of Technology, Beijing 100081, China） 11-2592/O3 cosmological constant, fine-structure constant, observational constraints, vacuum energy, obser-vational cosmology In this work, we consider the so-called A（α）CDM cosmology with A α-6 while the fine-structure ＂constant＂ a is varying. In this scenario, the accelerated expansion of the universe is driven by the cosmological ＂constant＂ A （equivalently the vacuum energy）, and the varying a is driven by a subdominant scalar field φ coupling with the electromagnetic field. The observationM constraints on the varying a and A α-6 models with various couplings By （φ） between the subdominant scalar field φ and the electromagnetic field are considered. |
| ISSN: | 0253-6102 |