Baryoid Dark Matter from ${\mathbb{Z}}_N$ Domain Walls: The $(N-1):1$ origin of the dark matter-baryon coincidence

Yang Bai, Ting-Kuo Chen

We propose an explanation for the dark matter-baryon coincidence based on collapsing ${\mathbb{Z}}_N$ domain walls, which form a novel compact baryonic state: the baryoid. A baryoid…