Quantum Theory of the Classical: Einselection, Envariance, Quantum Darwinism and Extantons

2022/08/18 by Wojciech Hubert Zurek · 1 voice
Physics and Astronomy · #quant-ph #cond-mat.stat-mech

paper · pdf · doi:10.3390/e24111520

Abstract

Core quantum postulates including the superposition principle and the unitarity of evolutions are natural and strikingly simple. I show that -- when supplemented with a limited version of predictability (captured in the textbook accounts by the repeatability postulate) -- these core postulates can account for all the symptoms of classicality. In particular, both objective classical reality and elusive information about reality arise, via quantum Darwinism, from the quantum substrate.

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• New review by Zurek on pointer states, quantum Darwinism, and the emergence of the classical world. I think these are some of the most important issues in physics, but not everyone agrees with me ther [bsky, 0 points, 0 comments]

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