Quark matter as dark matter in modeling galactic halo

TL;DR

This paper models galactic halo dark matter as quark matter, deriving conditions for attractive gravity and stable orbits, suggesting quark matter as a viable dark matter candidate in galactic halos.

Contribution

It introduces a novel model of dark matter in galactic halos using quark matter and analyzes its gravitational and stability properties.

Findings

Derived a background spacetime metric for galactic halos with quark matter.

Established conditions for attractive gravity in the halo region.

Showed quark matter can support stable circular orbits.

Abstract

Considering the flat rotation curves as input and treating the matter content in the galactic halo region as quark matter, we have found out a background spacetime metric for the region of the galactic halo. We obtain fairly general conditions that ensure that gravity in the halo region is attractive. We also investigate the stability of circular orbits, along with a different role for quark matter. Bag-model quark matter meeting these conditions therefore provides a suitable model for dark matter.