Structural Definition of Consciousness and Time--Causal Geometry: Quantum Fisher Information, Causal Controllability, and Observer Proper Time

This paper attempts to provide a structural definition of consciousness within a fully physicalized and informationalized framework that is both formalizable and connectable to experiential phenomena. Rather than treating ``consciousness'' as an additional ontology or purely phenomenological label, we characterize consciousness as: a world--self joint information flow formed on a subsystem in a given physical world, possessing sufficient integration, discriminability, self-reference, temporal co