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- W2888615400 abstract "Assuming that the Universe at higher redshifts (z sim 4 and beyond) is consistent with LCDM model as constrained by the Planck measurements, we reanalyze the low redshift cosmological data to reconstruct the Hubble parameter as a function of redshift in a model independent way. This enables us to address the H_0 and other tensions between low z observations and high z Planck measurement from CMB. From H(z), we reconstruct the energy density for the `dark energy' sector of the Universe as a function of redshift and find that the dark energy density has a minimum for certain redshift range and that this rho_{DE}^{min} is negative. This behavior can most simply be described by a negative cosmological constant plus a dark energy sector which has a phantom crossing. We discuss possible theoretical and observational implications of such a scenario." @default.
- W2888615400 created "2018-08-31" @default.
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- W2888615400 date "2018-08-20" @default.
- W2888615400 modified "2023-09-23" @default.
- W2888615400 title "Negative Cosmological Constant is Consistent with Cosmological Data" @default.
- W2888615400 hasPublicationYear "2018" @default.
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