Comment on "Does gravitational confinement sustain flat galactic rotation curves without dark matter?''

TL;DR

This paper critiques a recent study on gravitational effects on galactic rotation curves, arguing that its methods do not properly test the claims of significant non-perturbative corrections from General Relativity.

Contribution

It clarifies that the recent study's approximations exclude the mechanism proposed in earlier works, challenging its conclusion about the insignificance of non-perturbative effects.

Findings

The recent study's methods exclude the mechanism in previous research.

The study's conclusion that corrections are not important is not supported by its approximations.

The critique emphasizes the need for appropriate methods to test non-perturbative effects.

Abstract

We comment on the methods and the conclusion of Ref. [1], "Does gravitational confinement sustain flat galactic rotation curves without dark matter?" The article employs two methods to investigate whether non-perturbative corrections from General Relativity are important for galactic rotation curves, and concludes that they are not. This contradicts a series of articles [2-4] that had determined that such corrections are large. We comment here that Ref. [1] use approximations known to exclude the specific mechanism studied in [2-4] and therefore is not testing the finding of Refs. [2-4].