On the Two Spaces of Elementary Particles, and Why Wave Functions Collapse

<jats:p>The current formulation of quantum theory is notoriously agnostic about the ontological aspects of the propagation of elementary particles and their interactions. In this brief note, we propose a minimal ontological representation of interactions, based on a micro-cosmological description of the manifestation of these particles in the collapse events of their wave function. The fading of the pre-collapse wave function and the arising of the post-collapse function occur dynamically, as they asymptotically approach different sheets of the same micro-cosmological horizon, whose projections onto ordinary spacetime are placed at finite times.</jats:p>