Testing viable extensions of Einstein-Gauss-Bonnet gravity

被引：12
作者：
Odintsov, Sergei D. [1 ,2 ]
Gomez, Diego Saez-Chillon [3 ]
Sharov, German S. [4 ,5 ]
机构：
[1] CSIC, Inst Space Sci ICE, C Can Magrans S n, Barcelona 08193, Spain
[2] Inst Catalana Recerca Estudis Avancats ICREA, Passeig Luis Co 23, Barcelona 08010, Spain
[3] Univ Valladolid UVA, Dept Theoret Atom & Opt Phys, Campus Miguel Delibes, Paseo Belen,7, Valladolid 47011, Spain
[4] Tver state Univ, Sadovyj per 35, Tver 170002, Russia
[5] Tomsk State Univ Control Syst & Radioelect TUSUR, Int Lab Theoret Cosmol, Tomsk 634050, Russia
来源：
PHYSICS OF THE DARK UNIVERSE | 2022年 / 37卷
关键词：
Cosmology; Modified gravities; Dark energy; BARYON ACOUSTIC-OSCILLATIONS; CENT DISTANCE; COSMOLOGY; GALAXIES; MODELS; VS; I;
D O I：
10.1016/j.dark.2022.101100
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Some models within the framework of Gauss-Bonnet gravities are considered in the presence of a non-minimally coupled scalar field. By imposing a particular constraint on the scalar field coupling, a class of these theories called Einstein-Gauss-Bonnet gravity keeps the correct speed of propagation for gravitational waves. The cosmological evolution for this viable class of models is studied and compared with observational data (BAO, CMB, Sne Ia,..), where we obtain the corresponding bounds for these theories and show that such theories fit well the data and provide a well-behaved cosmological evolution in comparison to the standard model of cosmology. Some statistical parameters show that the goodness of the fits are slightly better than those for ACDM model.(c) 2022 Elsevier B.V. All rights reserved.
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页数：8
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