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2017

Planck 2015 constraints on the non-flat $\phi$CDM inflation model

Ooba, Junpei, Ratra, Bharat, Sugiyama, Naoshi

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We perform Markov chain Monte Carlo analyses to put constraints on the non-flat $\phi$CDM inflation model using Planck 2015 cosmic microwave background (CMB) anisotropy data and baryon acoustic oscillation distance measurements.

The $\phi$CDM model is a consistent dynamical dark energy model in which the currently accelerating cosmological expansion is powered by a scalar field $\phi$ slowly rolling down an inverse power-law potential energy density.
We also use a physically consistent power spectrum for energy density inhomogeneities in this non-flat model.
We find that, like the closed-$\Lambda$CDM and closed-XCDM models, the closed-$\phi$CDM model provides a better fit to the lower multipole region of the CMB temperature anisotropy data compared to that provided by the tilted flat-$\Lambda$CDM model.

Planck 2015 constraints on the non-flat $\phi$CDM inflation model · Around

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