Classical system boundaries cannot be determined within quantum Darwinism

Abstract

Multiple observers who interact with environmental encodings of the states of a macroscopic quantum system S as required by quantum Darwinism cannot demonstrate that they are jointly observing S without a joint a priori assumption of a classical boundary separating S from its environment E. Quantum Darwinism cannot, therefore, be regarded as providing a purely quantum-mechanical explanation of the "emergence" of classicality.

10 pages, extensively revised to make physical assumptions underlying the formalism explicit

References in corpus (4)

• Quantum Darwinism
• Quantum Darwinism in a hazy environment
• Quantum Darwinism requires an extra-theoretical assumption of encoding redundancy
• Classicality, the ensemble interpretation, and decoherence: Resolving the Hyperion dispute

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