English

Entropic force, running gravitational coupling and future singularities

General Relativity and Quantum Cosmology 2014-02-25 v2

Abstract

The effects of a running gravitational coupling and the entropic force on future singularities are considered. Although it is expected that the quantum corrections remove the future singularities or change the singularity type, treating the running gravitational coupling as a function of energy density is found to cause no change in the type of singularity but causes a delay in the time that a singularity occurs. The entropic force is found to replaces the singularity type IIII by IIIˉ\bar{III} (a=a=const., H=H=const., H˙\dot{H} \to \infty, pp \to \infty, ρ\rho \to \infty) which differs from previously known type IIIIII and to remove the ww-singularity. We also consider an effective cosmological model and show that the types II and IIII are replaced by the singularity type IIIIII.

Keywords

Cite

@article{arxiv.1309.7827,
  title  = {Entropic force, running gravitational coupling and future singularities},
  author = {Maryam Aghaei Abchouyeh and Behrouz Mirza and Zeinab Sherkatghanad},
  journal= {arXiv preprint arXiv:1309.7827},
  year   = {2014}
}

Comments

7 pages, 5 figures, references added

R2 v1 2026-06-22T01:37:03.041Z