On the energy conditions in non-compact Kaluza-Klein gravity
Article first published online: 8 MAR 2010
Copyright © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Annalen der Physik
Volume 19, Issue 3-5, pages 276–280, April 2010
How to Cite
Rasouli, S.M.M. and Jalalzadeh, S. (2010), On the energy conditions in non-compact Kaluza-Klein gravity. Ann. Phys., 19: 276–280. doi: 10.1002/andp.201010427
- Issue published online: 25 MAR 2010
- Article first published online: 8 MAR 2010
- Manuscript Accepted: 20 JAN 2010
- Manuscript Revised: 12 JAN 2010
- Manuscript Received: 30 OCT 2009
- extra dimensions;
- induced matter theory;
- conformally flat.
We investigate a few cosmological solutions in non-compact five-dimensional space-time which is both Ricci-flat and conformally flat. We then study the reduced solutions on the brane in detail by applying the four energy conditions, which categorize our model in some classes. These classes of solutions can describe the universe including accelerating expansion with either abnormal matter (when matter specifically violates the strong energy condition, it is called abnormal) or a phantom model of dark energy and a Stephani universe which is dominated by abnormal matter describing vacuum energy.