Di Biagio, Andrea and Rovelli, Carlo (2025) Relative Information, Relative Facts. [Preprint]
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Abstract
We offer a fresh perspective on the relational interpretation of quantum mechanics as a way of thinking about the world described by quantum theory based on quantifiable notions of information. This allows us to provide a definition of a relative fact, with no addition to orthodox quantum theory and no fundamentally special role for observers. By associating perspectives with commutative observables rather than entire quantum systems, several previous problems with the interpretation are dissolved. As a side result, we show how a quantum measurement, properly described, is a continuous process.
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Relative Information, Relative Facts. (deposited 13 Oct 2025 17:13)
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