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• W2069084331 endingPage "2048" @default.
• W2069084331 startingPage "2025" @default.
• W2069084331 abstract "We investigate the constraints on cosmological parameters especially for EoS of dark energy, inflationary parameters, neutrino mass and curvature of universe using simulated Planck data. Firstly we determine cosmological parameters with current observations including ESSENCE, WMAP3, Boomerang-2K2, CBI, VSA, ACBAR, SDSS LRG and 2dFGRS, and take best-fit model as the fiducial model in simulations. In simulations we pay attention to the effects of dynamical dark energy in determination of cosmological parameters. We add simulated SNAP data to do all the simulations. Using present data, we find Quintom dark energy model is mildly favored while LambdaCDM remains a good fit. In the framework of dynamical dark energy, the constraints on inflationary parameters, m_{nu} and Omega_{K} become weak compared with the constraints in LambdaCDM. Intriguingly, we find that the inflationary models with a blue tilt, which are excluded about 2sigma in LambdaCDM model, are well within 2sigma 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, m_{nu}<1.59 eV and 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, dynamical dark energy and LambdaCDM might be distinguished at 4sigma. And uncertainties of inflationary parameters, m_{nu} and Omega_{K} can be reduced obviously. We also constrain the rotation angle Deltaalpha, denoting possible cosmological CPT violation, with simulated Planck and CMBpol data and find that our results are much more stringent than current constraint and will verify cosmological CPT symmetry with a higher precision. (Abridged)" @default.
• W2069084331 created "2016-06-24" @default.
• W2069084331 creator A5029090938 @default.
• W2069084331 creator A5040808837 @default.
• W2069084331 creator A5051811265 @default.
• W2069084331 creator A5063363349 @default.
• W2069084331 date "2008-10-01" @default.
• W2069084331 modified "2023-10-05" @default.
• W2069084331 title "PROBING FOR THE COSMOLOGICAL PARAMETERS WITH PLANCK MEASUREMENT" @default.
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• W2069084331 doi "https://doi.org/10.1142/s0218271808013698" @default.
• W2069084331 hasPublicationYear "2008" @default.
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