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Original Paper
Dark energy: current issues
Article first published online: 3 APR 2006
DOI: 10.1002/andp.200510192
Copyright © 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
1521-3889/asset/cover.gif?v=1&s=294b277cbfffc09eca8e330fc1e2b8eca0869908 "Annalen der Physik")
Additional Information
How to Cite
Polarski, D. (2006), Dark energy: current issues. Ann. Phys., 15: 342–351. doi: 10.1002/andp.200510192
Publication History
- Issue published online: 3 APR 2006
- Article first published online: 3 APR 2006
- Manuscript Revised: 16 JAN 2006
- Manuscript Accepted: 16 JAN 2006
- Manuscript Received: 6 NOV 2005
- Abstract
- References
- Cited By
Keywords:
- Dark energy;
- accelerated expansion
Abstract
The observed recent accelerated expansion of the Universe constitutes a dramatic departure from traditional views. The mechanism behind this accelerated expansion is still mysterious and is a major challenge to present-day cosmology. Though it can be due to a new perfect fluid with negative pressure coined Dark Energy, it could also originate from modifications of gravity. We present some Dark Energy models in the context of General Relativity and review in some details the properties of Dark Energy models in scalar-tensor gravity. We emphasize that observations probing both the background and the perturbations will constrain the proposed model most effectively.