Dark matter candidate from torsion

TL;DR

This paper proposes a pseudo-scalar particle from Poincaré Gauge gravity as a dark matter candidate, identifying its viable parameter space and constraining it with astrophysical data.

Contribution

It introduces a new dark matter candidate derived from torsion in Poincaré Gauge gravity and explores its parameter space.

Findings

Identifies a stable pseudo-scalar from torsion as a dark matter candidate.

Constrains the model parameters using astrophysical observations.

Shows the candidate can account for all cold dark matter.

Abstract

The stable pseudo-scalar degree of freedom of the quadratic Poincar\'e Gauge theory of gravity is shown to be a suitable dark matter candidate. We find the parameter space of the theory which can account for all the predicted cold dark matter, and constrain such parameters with astrophysical observations.