Cosmological reconstructed solutions in extended teleparallel gravity theories with a teleparallel Gauss-Bonnet term

被引:23
作者
de la Cruz-Dombriz, Alvaro [1 ,2 ]
Farrugia, Gabriel [3 ,4 ]
Said, Jackson Levi [3 ,4 ]
Saez-Chillon Gomez, Diego [5 ]
机构
[1] Univ Cape Town, Cosmol & Grav Grp, ZA-7701 Cape Town, South Africa
[2] Univ Cape Town, Dept Math & Appl Math, ZA-7701 Cape Town, South Africa
[3] Univ Malta, Dept Phys, Msida 2080, Msd, Malta
[4] Univ Malta, Inst Space Sci & Astron, Msida 2080, Msd, Malta
[5] ICE CSIC IEEC, Inst Ciencies Espai, Campus UAB,Carrer Can Magrans S-N, Bellaterra 08193, Barcelona, Spain
基金
新加坡国家研究基金会;
关键词
modified gravity; teleparallel gravity; cosmology; F R; CONSTRAINTS; INFLATION; EPOCH; FIELD;
D O I
10.1088/1361-6382/aa93c8
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
In the context of extended teleparallel gravity theories with a 3 + 1 dimensions Gauss-Bonnet analog term, we address the possibility of these theories reproducing several well-known cosmological solutions. In particular when applied to a Friedmann-Lemacetre-Robertson-Walker geometry in four-dimensional spacetime with standard fluids exclusively. We study different types of gravitational Lagrangians and reconstruct solutions provided by analytical expressions for either the cosmological scale factor or the Hubble parameter. We also show that it is possible to find Lagrangians of this type without a cosmological constant such that the behaviour of the Lambda CDM model is precisely mimicked. The new Lagrangians may also lead to other phenomenological consequences opening up the possibility for new theories to compete directly with other extensions of General Relativity.
引用
收藏
页数:34
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