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A. Messina

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Open access Jul 2026

Rethinking the Hierarchy: On the Structural Relation Between Quantum and Classical Theories

Quantum mechanics is among the most successful physical theories, yet its formulation and empirical testing rely on classical structures. Following Lev Landau and Niels Bohr, this reliance is not merely pragmatic: quantum observables acquire empirical meaning only relative to classical reference frames, and, in practic...

A. Sergi, A. Migliore, A. Messina · Physics · 0 citations