A physical model for dimensional reduction and its effects on the observable parameters of the universe

Details A physical model for dimensional reduction and its effects on the observable parameters of the universe A physical model for dimensional reduction and its effects on the observable parameters of the universe

Apr 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008gregr..40..799k&link_type=abstract

General Relativity and Gravitation, Volume 40, Issue 4, pp.799-831

Mathematics

Logic

Inflation, Dimensional Reduction, Phase Transition

Scientific paper

We construct a physical model to study the effects of dimensional reduction that might have taken place during the inflationary phase of the universe. The model we propose is a (1 + D)-dimensional ( D > 3), nonsingular, spatially homogeneous and isotropic Friedmann model. We consider dimensional reduction to take place in a stepwise manner and interpret each step as a phase transition. Independent of the details of the process of dimensional reduction, we impose suitable boundary conditions across the transitions and trace the effects of dimensional reduction to the currently observable parameters of the universe. In order to exhibit the cosmological features of the proposed model, we construct a (1 + 4)-dimensional toy model for both closed and open cases of Friedmann geometries. It is shown that in these models the universe makes transition into the lower dimension when the critical length parameter l 4,3, which signals dimensional reduction, reaches the Planck length in D = 3. The numerical models we present in this paper have the capability of making definite predictions about the cosmological parameters of the universe such as the Hubble parameter, age and density.

Affiliated with

Also associated with

No associations

Rating

A physical model for dimensional reduction and its effects on the observable parameters of the universe 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 A physical model for dimensional reduction and its effects on the observable parameters of the universe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A physical model for dimensional reduction and its effects on the observable parameters of the universe will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1343319