On negative mass cosmology in General Relativity

In this Letter we present strong arguments in favour of thoroughly revising the negative mass cosmology (NMC), which has been proposed as a simple alternative explanation of dark energy and dark matter effects, within the framework of general relativity. We show that there are various physical predictions of this model which require fine-tuning in order to make them compatible with current cosmological surveys. In this way, the original motivation of the NMC model becomes obscured due to the imposition of fine-tuned unknown variables. We conclude that a more rigorous theoretical treatment is needed in order to make the NMC a viable cosmological model.

Automated summary

The authors argue for a thorough revision of the negative mass cosmology (NMC) model as it requires fine-tuning of physical predictions to be compatible with current cosmological surveys, obscuring its original motivation. A more rigorous theoretical treatment is deemed necessary to make the NMC a viable cosmological model.