I'm interested in theories of dark matter where dark matter is an equivalent copy (or copies) of ordinary matter. Each equivalent sector is hidden from the others would see the others as 'dark' and their sector own as ordinary. So who is dark and who is ordinary is a relative situation of what sector you happen to be observing from.
I'd like to look at the question of under what conditions (size of the dark matter star, and it's velocity and the density of the nebula) would a star made of dark matter that passed through a nebula made of ordinary matter be able to trigger a collapse that nebula and form a star.
I'm imagining a situation like how the particle passing through a cloud chamber would cause condensation along the path of that particle.
This seems like a fairly obvious place to look for signs of dark matter, but I haven't been able to find a reference of anyone looking into this.
Is anyone aware of any leads, or if this idea has been developed already?