Abstract
Assessment of the Hubble parameter as an indicator of the expansion rate of the universe holds a central position in the field of astronomy. From its initial estimate of about 500 km⋅sec-1⋅parsc-1, this value had been steadily amended as the observational tools became more accurate and precise. Despite this, a gap remains between the value of observations relating to local and nonlocal estimations of the Hubble parameter that gave rise to what became known as the Hubble tension. This tension is addressed here while dealing with space fabric as a cosmological fluid that undergoes transition.
Highlights
The ΛCDM model which represents standard cosmology had a remarkable success in matching the theoretical predictions of the 6-parameter model to the observational findings
2) In the pre-transition era a) The Hubble parameter is represented by the modified density term only despite being a closed model (k ≠ zero as density term is greater in magnitude than curvature term). b) As a result of this distinction between spatial expansion volumetric expan
3) In post transition era, introduction of a locally varying Hubble parameter which seems to be a departure from general principle of cosmology which necessitates that inflation is the same everywhere in the universe, but otherwise the reminder of that principle still holds since the degree of freedom expansion of the statistically distributed quanton densities as well as parameter synchronization ensured the space fabric uniformity and homogeneity
Summary
The ΛCDM model which represents standard cosmology had a remarkable success in matching the theoretical predictions of the 6-parameter model to the observational findings. There had been many recent challenges to the integrity of this model in the form of local estimations of the Hubble parameter [1] [2] [3] [4] which have statistically significant difference from those values estimated by non-local measurements, mainly through CMB observations [5] [6]. The presence of enhanced lensing amplitude whose value exceeds the theoretical prediction ( AL > 1) [7] [8] is interpreted as an indication of a closed universe—in contradiction to the basic assumption of the ɅCDM model of a flat cosmology
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