Can homogeneous extra dimensions be stabilized during matter domination?

Astronomy and Astrophysics – Astrophysics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

9 pages, no figures, minor changes, references added

Scientific paper

10.1088/1475-7516/2003/10/006

We investigate cosmologies with homogeneous extra dimensions that can be described by generalised Friedmann-Robertson-Walker metrics and give a brief review on a general setup to describe a broad range of standard stabilization and compactification mechanisms. These mechanisms allow for solutions to the field equations with static extra dimensions if the universe is dominated by radiation or an approximately constant energy-momentum tensor, as for example due to a cosmological constant. During matter domination, however, there are no static solutions for the extra dimensions and we therefore conclude that in this setup it is not possible to construct stabilization mechanisms for the whole evolution history of the universe. We furthermore show in detail that the two possible approaches of discussing either the higher-dimensional field equations directly or the dimensionally reduced and conformally transformed theory, are exactly equivalent and thus lead to the same conclusions. Finally, we indicate a possible way out of these difficulties.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Can homogeneous extra dimensions be stabilized during matter domination? 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 Can homogeneous extra dimensions be stabilized during matter domination?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Can homogeneous extra dimensions be stabilized during matter domination? will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-341305

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.