TY  - JOUR
AU  - Barenboim, G.
AU  - Fernandez-Martinez, E.
AU  - Mena, O.
AU  - Verde, L.
PY  - 2010
DA  - 2010//
TI  - The dark side of curvature
T2  - J. Cosmol. Astropart. Phys.
JO  - Journal of Cosmology and Astroparticle Physics
SP  - 008
EP  - 17pp
VL  - 03
IS  - 3
PB  - Iop Publishing Ltd
KW  - dark energy experiments
KW  - baryon acoustic oscillations
KW  - cosmological parameters from CMBR
AB  - Geometrical tests such as the combination of the Hubble parameter H(z) and the angular diameter distance d(A)(z) can, in principle, break the degeneracy between the dark energy equation of state parameter w(z), and the spatial curvature Omega(k) in a direct, model-independent way. In practice, constraints on these quantities achievable from realistic experiments, such as those to be provided by Baryon Acoustic Oscillation (BAO) galaxy surveys in combination with CMB data, can resolve the cosmic confusion between the dark energy equation of state parameter and curvature only statistically and within a parameterized model for w(z). Combining measurements of both H(z) and d(A)(z) up to sufficiently high redshifts z similar to 2 and employing a parameterization of the redshift evolution of the dark energy equation of state are the keys to resolve the w(z) – Omega(k) degeneracy.
SN  - 1475-7516
UR  - http://lanl.arxiv.org/abs/0910.0252
UR  - https://doi.org/10.1088/1475-7516/2010/03/008
DO  - 10.1088/1475-7516/2010/03/008
LA  - English
N1  - ISI:000276103000026
ID  - Barenboim_etal2010
ER  -