Astronomy and Astrophysics – Astrophysics
Scientific paper
2008-09-08
Kinematics Phys.Celest.Bodies 25:57-63,2009
Astronomy and Astrophysics
Astrophysics
5 pages, 3 figures, LaTex, a few remarks and reference added
Scientific paper
We consider multidimensional cosmological model with a higher-dimensional product manifold M = R x R^{d_0} x H^{d_1}/\Gamma where R^{d_0} is d_0-dimensional Ricci-flat external (our) space and H^{d_1}/\Gamma is d_1-dimensional compact hyperbolic internal space. M2-brane solution for this model has the stage of accelerating expansion of the external space. We apply this model to explain the late time acceleration of our Universe. Recent observational data (the Hubble parameter at the present time and the redshift when the deceleration parameter changes its sign) fix fully all free parameters of the model. As a result, we find that considered model has too big size of the internal space at the present time and variation of the effective four-dimensional fine structure constant strongly exceeds the observational limits.
Baukh Viktor
Zhuk Alexander
No associations
LandOfFree
Dynamical dark energy from extra dimensions 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 Dynamical dark energy from extra dimensions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dynamical dark energy from extra dimensions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-31060