English

Energy Conditions in Modified $f(G)$ Gravity

General Relativity and Quantum Cosmology 2017-08-08 v1 Cosmology and Nongalactic Astrophysics High Energy Physics - Theory

Abstract

In this paper, we have considered flat Friedmann-Lema\^{i}tre-Robertson-Walker metric in the framework of perfect fluid models and modified f(G)f(G) gravity (where GG is the Gauss Bonnet invariant). Particularly, we have considered particular realistic f(G)f(G) configurations that could be used to cure finite-time future singularities arising in the late-time cosmic accelerating epochs. We have then developed the viability bounds of these models induced by weak and null energy conditions, by using the recent estimated numerical figures of the deceleration, Hubble, snap and jerk parameters.

Keywords

Cite

@article{arxiv.1707.07386,
  title  = {Energy Conditions in Modified $f(G)$ Gravity},
  author = {Kazuharu Bamba and M. Ilyas and M. Z. Bhatti and Z. Yousaf},
  journal= {arXiv preprint arXiv:1707.07386},
  year   = {2017}
}

Comments

17 pages, 5 figures, version accepted for publication in General Relativity and Gravitation