Accelerated expansion induced by Dark Matter with two charges

TL;DR

This paper proposes a novel dark matter model with two charges that could explain the universe's accelerated expansion without invoking a cosmological constant, providing a new perspective on dark energy.

Contribution

It introduces a new dark matter model with dual charges that generates a repulsive force, potentially accounting for cosmic acceleration without a cosmological constant.

Findings

Dark matter with two charges can produce a repulsive force.

The model closely mimics effects of a cosmological constant.

Supports alternative explanations for cosmic acceleration.

Abstract

The accelerated expansion of the universe has been established through observations of supernovae, the growth of structure, and the cosmic microwave background. The most popular explanation is Einsteins cosmological constant, or dynamic variations hereof. A recent paper demonstrated that if dark matter particles are endowed with a repulsive force proportional to the internal velocity dispersion of galaxies, then the corresponding acceleration of the universe may follow that of a cosmological constant fairly closely. However, no such long-range force is known to exist. A concrete example of such a force is derived here, by equipping the dark matter particles with two new dark charges. This result lends support to the possibility that the current acceleration of the universe may be explained without the need for a cosmological constant.