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arXiv · 1312.6588

Quantum origins of objectivity

R. Horodecki·J. K. Korbicz·P. Horodecki
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Abstract

In spite of all of its successes, quantum mechanics leaves us with a central problem: How does Nature create a "foot-bridge" from fragile quanta to the objective world of everyday experience? Here we identify within quantum mechanics a fundamental process leading to the perceived objectivity and called state information broadcasting. This is the trick that Nature uses instead of a simple cloning. We uncover it basing on minimal assumptions, without referring to any dynamical details or a concrete model. More specifically, we show how a crucial for quantum mechanics notion of non-disturbance due to Bohr and a natural definition of objectivity lead to a canonical structure of a quantum system-environment state, reflecting objective information records about the system stored in the environment.

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R. Horodecki, J. K. Korbicz, P. Horodecki. 2013-12-23. Quantum origins of objectivity. https://doi.org/10.1103/physreva.91.032122

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