# On the invalidity of "negative mass" description of the dark sector

## TL;DR

The paper critically examines the concept of 'negative mass' in dark sector models, arguing it conflicts with General Relativity and observations, and suggests an alternative modified gravity approach.

## Contribution

It refutes the validity of 'negative mass' as a description of dark matter and proposes a modified weak-field General Relativity model as a viable alternative.

## Key findings

- 'Negative mass' concept contradicts General Relativity.
- Observational data does not support 'negative mass' models.
- A modified weak-field General Relativity offers a consistent alternative.

## Abstract

It is shown that the concept of "negative mass" introduced by Farnes (2018) to describe the dark sector within a unifying theory with the negative cosmological constant contradicts both the essence of the General Relativity and the available observational data. A viable model with modified weak-field General Relativity is mentioned.