Статья: The Embedded-Observer No-Go Theorem
Experimental verification protocols have been added. Any closed unitary quantum system -from many-body lattice models to quantum-gravity programs that posit a strictly unitary wavefunction of the universe (causal sets, LQG, CDT, string theory, Everettian decoherence) - contains embedded observers who cannot, in principle, fully self-describe the global state or evolve autonomously and unitarily once a generic, non-fine-tuned interaction with the rest of the system has occurred even a single time. The result is locality-independent: the proof rests only on closure, the observer’s embeddedness, and the genericity of the coupling. “Collapse” and apparent irreversibility cease to be separate postulates - they are a provable consequence of embeddedness itself. The theorem additionally establishes a causal boundary -an exact light cone for discrete quantum circuits, an approximate one (with an exponentially small tail) for general local Hamiltonian systems -together with an operational tool for quantifying the two distinct kinds of limitation on an observer’s knowledge: stock (entropy) and flow (channel unitarity). Computational Appendix: https://github. com/SergejMaterov/Embedded_Observer_NoGo
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