Comment on "No-go theorem for bimetric gravity with positive and negative mass"

TL;DR

This paper critiques a no-go theorem for bimetric gravity with positive and negative mass, demonstrating that the theorem does not apply to a specific prior work, thereby challenging its generality.

Contribution

It clarifies the limitations of the existing no-go theorem and shows its inapplicability to certain cases in bimetric gravity research.

Findings

The no-go theorem does not apply to arXiv:0807.2838v1 [gr-qc]

The critique identifies specific conditions where the theorem fails

Supports the possibility of bimetric gravity models with positive and negative mass

Abstract

Authors Hohmann and Wohlfarth have put forward a no-go theorem for bimetric gravity with positive and negative mass in arXiv:0908.3384v1 [gr-qc]. This comment shows that their no-go theorem does not apply to arXiv:0807.2838v1 [gr-qc].