Kinematic cosmology in conformally flat spacetime

TL;DR

This paper critiques Endean's claims that conformally flat spacetime cosmology resolves standard model issues and eliminates singularities, demonstrating that his arguments are flawed and rejecting his CFS cosmology.

Contribution

The paper provides a critical analysis of Endean's CFS cosmology, refuting his claims and clarifying the issues with his approach.

Findings

Endean's claims of singularity avoidance are based on fallacious arguments.

The critique demonstrates that CFS cosmology does not resolve standard model difficulties.

Endean's CFS cosmology is rejected due to flawed reasoning.

Abstract

In a recent series of papers Endean examines the properties of spatially homogeneous and isotropic (FLRW) cosmological models filled with dust in the ``conformally flat spacetime presentation of cosmology'' (CFS cosmology). This author claims it is possible to resolve a certain number of the difficulties the standard model exhibits when confronted to observations, if the theoretical predictions are obtained in the special framework of CFS cosmology. As a by-product of his analysis Endean claims that no initial (big-bang) nor final (big-crunch) singularities occur in the closed FLRW model. In this paper we show up the fallacious arguments leading to Endean's conclusions and we consistently reject his CFS cosmology.