In this paper we investigate the constraints on the cosmological parameters , especially for the equation of state of dynamical dark energy w _ { { \mathrm { DE } } } , the inflationary parameters n _ { s } , \alpha _ { s } and r , the total neutrino mass \sum m _ { \nu } and the curvature of universe \Omega _ { K } , using the simulated data of future Planck measurement .
Firstly we determine the cosmological parameters with the current observations , including ESSENCE ( 192 sample ) , WMAP three year ( WMAP3 ) , Boomerang-2K2 , CBI , VSA , ACBAR , SDSS LRG and 2dFGRS , and then take the best-fit model as the fiducial model in our following simulations .
In the simulations we pay particular attention to the effects of the dynamical dark energy in the determination of the cosmological parameters .
Due to this reason , in order to make our constraints more robust , we have added the simulated SNAP data in our simulations .
Using the present data , we find that the Quintom dark energy model is mildly favored , while the \Lambda CDM model remains a good fit .
In the framework of dynamical dark energy model , the constraints on the inflationary parameters , \sum m _ { \nu } and \Omega _ { K } become weak , compared with the constraints in the \Lambda CDM model .
Intriguingly , we find that the inflationary models with a “ blue ” tilt , which are excluded about 2 \sigma in the \Lambda CDM model , are well within 2 \sigma region with the presence of the dynamics of dark energy .
The upper limits of neutrino mass are weakened by a factor of 2 ( 95 \%~ { } C . L . ) , say , \sum m _ { \nu } < 1.59 ~ { } eV and \sum m _ { \nu } < 1.53 ~ { } eV for two forms of parametrization of the equation of state of dark energy .
The flat universe is a good fit to the current data , namely , | \Omega _ { K } | < 0.03 ~ { } ( 95 \%~ { } C . L . ) .
With the simulated Planck and SNAP data , the dynamical dark energy model and the \Lambda CDM model might be distinguished at 4 \sigma confidence level .
And the uncertainties of the inflationary parameters , \sum m _ { \nu } and \Omega _ { K } can be reduced significantly in the framework of the dynamical dark energy model .
We also constrain the rotation angle \Delta \alpha , denoting the possible CPT violation , from the simulated Planck and CMBpol data and find that our results are much more stringent than the current constraint and will be used to verify the CPT symmetry with a higher precision .