Comment on "A study of phantom scalar field cosmology using Lie and Noether symmetries" [Int. J. Mod. Phys. D 25 (2016) 1650051]

TL;DR

This paper critiques a recent study on scalar field cosmology, arguing that its results are well-known and could be obtained more simply through coordinate transformations, emphasizing the invariance of symmetry groups.

Contribution

It highlights the redundancy of the recent results by showing they are already known and can be derived through coordinate transformations, questioning the novelty of the original work.

Findings

Recent results are well-known in literature

Symmetry groups are coordinate-invariant

Coordinate transformations simplify the problem

Abstract

We show that the recent results of \ [Int. J. Mod. Phys. D 25 (2016) 1650051] on the application of Lie/Noether symmetries in scalar field cosmology are well-known in the literature while the problem could have been solved easily under a coordinate transformation. That follows from the property, that the admitted group of invariant transformations of dynamical system is independent on the coordinate system.