Cosmological constraints in covariant f(Q) gravity with different connections

被引：23
作者：
Shi J. [1 ,2 ]
机构：
[1] School of Fundamental Physics and Mathematical Sciences, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou
[2] School of Physical Sciences, University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing
来源：
European Physical Journal C | 2023年 / 83卷 / 10期
基金：
英国科研创新办公室;
关键词：
Cosmology - Equations of state;
D O I：
10.1140/epjc/s10052-023-12139-w
中图分类号：
学科分类号：
摘要：
Recently it has been shown that the cosmological dynamics of covariant f(Q) gravity depend on different affine connections. In this paper, two specific f(Q) models are investigated with SNe+CC+BAO+QSO observational data, and the spatial curvature of the universe is studied in covariant f(Q) gravity. It is found that the parameters X and X0′ characterizing affine connections significantly affect the behavior of the effective equation of state wQ and may drive it across the phantom divide line. These results imply some inertial effects of the universe change the cosmic dynamics. However based on the Bayesian evidence, the zero inertial effect is more favored in the flat universe. Moreover, a closed universe is favored not only in the Λ CDM model but also in covariant f(Q) gravity. The f(Q) models have less support evidence than the Λ CDM model in the non-flat universe. © 2023, The Author(s).
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共 101 条
[1]  
Hohmann M., Symmetry, 12, (2020)
[2]  
Zhao D., Eur. Phys. J. C, 82, (2022)
[3]  
Hohmann M., Phys. Rev. D, 104, (2021)
[4]  
Dimakis N., Paliathanasis A., Roumeliotis M., Christodoulakis T., Phys. Rev. D, 106, (2022)
[5]  
Nester J.M., Yo H.-J., Chin. J. Phys., 37, (1999)
[6]  
Beltran Jimenez J., Heisenberg L., Koivisto T., Phys. Rev. D, 98, (2018)
[7]  
Krssak M., Saridakis E.N., Class. Quantum Gravity, 33, (2016)
[8]  
Krssak M., van den Hoogen R.J., Pereira J.G., Bohmer C.G., Coley A.A., Class. Quantum Gravity, 36, (2019)
[9]  
Bahamonde S., Dialektopoulos K.F., Escamilla-Rivera C., Farrugia G., Gakis V., Hendry M., Hohmann M., Levi Said J., Mifsud J., Di Valentino E., Rep. Prog. Phys, 86, (2023)
[10]  
Beltran Jimenez J., Heisenberg L., Koivisto T.S., Pekar S., Phys. Rev. D, 101, (2020)
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