English

Cosmic coincidence problem and variable constants of physics

General Relativity and Quantum Cosmology 2009-03-12 v3

Abstract

The standard model of cosmology is investigated using time dependent cosmological constant Λ\Lambda and Newton's gravitational constant GG. The total energy content is described by the modified Chaplygin gas equation of state. It is found that the time dependent constants coupled with the modified Chaplygin gas interpolate between the earlier matter to the later dark energy dominated phase of the universe. We also achieve a convergence of parameter ω1\omega\to-1, with minute fluctuations, showing an evolving ω\omega. Thus our model fairly alleviates the cosmic coincidence problem which demands ω=1\omega=-1 at present time.

Keywords

Cite

@article{arxiv.0809.4314,
  title  = {Cosmic coincidence problem and variable constants of physics},
  author = {Mubasher Jamil and Farook Rahaman and Mehedi Kalam},
  journal= {arXiv preprint arXiv:0809.4314},
  year   = {2009}
}

Comments

27 pages, 15 figures

R2 v1 2026-06-21T11:23:58.890Z