Ref HAL: in2p3-00025048_v1
Ref Arxiv: astro-ph/0507290
DOI: 10.1016/j.physletb.2005.09.008
WoS: 000232955700001
Ref. & Cit.: NASA ADS
Exporter : BibTex | endNote
37 Citations
Résumé:

The formalism in order to obtain the Dark Energy equation of state is extended to non-flat universes and we consider the inequalities that must be satisfied by Phantom Dark Energy in this case. We show that due to a non-vanishing spatial curvature satisfying the observational bounds, the uncertainty on the determination of the Dark Energy equation of state parameter $w$, when it is taken constant, can be significant and that it is minimal for some redshift $z_{cr}\sim 3$. We consider the potential of future measurements of the gravitational waves emitted by binaries at high redshifts $z>z_{cr}$ to reduce this uncertainty. Results obtained here should also be relevant for a weakly varying equation of state with $w\approx -1$.