2017/05/31 by Alvaro de la Cruz-Dombriz, Gabriel Farrugia, Jackson Levi Said +1 · 1 citation
Physics and Astronomy · #gr-qc #hep-th
paper · pdf · doi:10.1088/1361-6382/aa93c8
published as Class. Quantum Grav. 34, 235011 (2017) · 40 pages, 3 tables, 2 appendices. For a quick view: see Tables 1,2,3. Extended analysis and conclusions. Version published in CQG
arxiv created 2017/11/20 · arxiv updated 2017/12/06
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-Lemaître-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 LCDM 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.