Type IV singular bouncing cosmology from Gravity
arXiv:1807.07407 · doi:10.1142/S0218271819501475
Abstract
We investigate bouncing scenario in the modified gravity, being the torsion scalar. Attention is attached to the reconstruction of 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 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 gravity solution where, according to the obtained result, the type IV singularity point is a saddle point in agreement with the bounce scenario.
arXiv comment9 pages, 3 figures. arXiv admin note: text overlap with arXiv:1504.06866 by other authors
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