Joint constraints from SPTpol, Planck 2015, and non-CMB data in six dark energy cosmologies find no strong data tension and continue to favor spatially closed universes over flat ones.
Nonflat time-variable dark energy cosmology
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abstract
We generalize the time-variable dark energy scalar field $\Phi$ model ($\Phi$CDM) to nonflat space. We show that even in the space-curvature-dominated epoch the scalar field solution is a time-dependent fixed point or attractor, with scalar field energy density that grows relative to the energy density in spatial curvature. This is the first example of a physically consistent and complete model of dynamical dark energy in a nonflat geometry.
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astro-ph.CO 1years
2019 1verdicts
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Using SPTpol, Planck 2015, and non-CMB data to constrain tilted spatially-flat and untilted non-flat $\Lambda$CDM, XCDM, and $\phi$CDM dark energy inflation cosmologies
Joint constraints from SPTpol, Planck 2015, and non-CMB data in six dark energy cosmologies find no strong data tension and continue to favor spatially closed universes over flat ones.