2018/07/14 by P. H. Logbo, M. J. S. Houndjo
Earth and Planetary Sciences · Physics and Astronomy · #Astrophysics #Black Holes and Theoretical Physics #Classical mechanics #Context (archaeology) #Cosmology #Cosmology and Gravitation Theories #Dark energy #De Sitter universe #Geometry #Geophysics and Gravity Measurements #Hubble's law #Initial singularity #Mathematical physics #Physics #Saddle point #Scalar (mathematics) #Singularity #Type (biology) #Universe #gr-qc
paper · pdf · doi:10.1142/s0218271819501475
9 pages, 3 figures. arXiv admin note: text overlap with arXiv:1504.06866 by other authors
arxiv created 2018/07/14 · openalex publication_date 2019/07/05 · arxiv updated 2019/09/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We investigate bouncing scenario in the modified [Formula: see text] gravity, [Formula: see text] being the torsion scalar. Attention is attached to the reconstruction of [Formula: see text] able to describe type IV singular bouncing evolution, where we adopt as assumption that the bouncing and type IV singularity points coincide. In the context of the reconstructed [Formula: see text] model, we calculate the Hubble slow-roll parameters in order to determine the dynamical evolution of the cosmological system under study. The results show that the Hubble slow-roll parameters become singular at the type IV singularity indicating a dynamical instability. Moreover, we perform the stability analysis of the [Formula: see text] gravity solution where, according to the obtained result, the type IV singularity point is a saddle point in agreement with the bounce scenario.