Astronomy and Astrophysics – Astrophysics – Cosmology and Extragalactic Astrophysics
Scientific paper
2010-07-04
Phys.Lett.B694:181-185,2010; Erratum-ibid.B701:672,2011
Astronomy and Astrophysics
Astrophysics
Cosmology and Extragalactic Astrophysics
8 pages; published version
Scientific paper
10.1016/j.physletb.2010.09.056 1
We propose a simple scenario which explains why our Universe appears spatially flat, homogeneous and isotropic. We use the Einstein-Cartan-Kibble-Sciama (ECKS) theory of gravity which naturally extends general relativity to include the spin of matter. The torsion of spacetime generates gravitational repulsion in the early Universe filled with quarks and leptons, preventing the cosmological singularity: the Universe expands from a state of minimum but finite radius. We show that the dynamics of the closed Universe immediately after this state naturally solves the flatness and horizon problems in cosmology because of an extremely small and negative torsion density parameter, $\Omega_S \approx -10^{-69}$. Thus the ECKS gravity provides a compelling alternative to speculative mechanisms of standard cosmic inflation. This scenario also suggests that the contraction of our Universe preceding the bounce at the minimum radius may correspond to the dynamics of matter inside a collapsing black hole existing in another universe, which could explain the origin of the Big Bang.
No associations
LandOfFree
Cosmology with torsion: An alternative to cosmic inflation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Cosmology with torsion: An alternative to cosmic inflation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cosmology with torsion: An alternative to cosmic inflation will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-593991