The role of curvature in the slowing down acceleration scenario
  We introduce the curvature $\Omega_k$ as a new free parameter in the Bayesian
analysis using SNIa, BAO and CMB data, in a model with variable equation of
state parameter $w(z)$. We compare the results using both the Constitution and
Union 2 data sets, and also study possible low redshift transitions in the
deceleration parameter $q(z)$. We found that, incorporating $\Omega_k$ in the
analysis, it is possible to make all the three observational probes consistent
using both SNIa data sets. Our results support dark energy evolution at small
redshift, and show that the tension between small and large redshift probes is
ameliorated. However, although the tension decreases, it is still not possible
to find a consensus set of parameters that fit all the three data set using the
Chevalier-Polarski-Linder CPL parametrization.
