A brief review is given of the present state of an approach to consistency between basic quantum mechanics and a unique macroscopic reality, with no assumption of branching in the state of the universe. The main new idea consists in the recognition of local properties in the growth and transport of entanglement between a macroscopic measuring quantum system and a microscopic measured one. Moving waves of entanglement from the environment arise then and carry external phases, affecting significantly the state of the measuring device. These "predecoherence" waves perturb randomly the growth of other waves, which carry entanglement with the measured system. The outcome of these wave interactions could generate random fluctuations in the quantum probabilities of different measurement channels, which could lead in turn to a collapse mechanism satisfying Born's probability rule, according to earlier works by Nelson and Pearle. A necessary randomness in the environment remains however unexplained and some suggestions regarding algorithmic complexity of the wave functions in a large quantum system e are made along that direction.Ovviamente non sto a tediarvi oltre, avendo in qualche modo sviscerato l'argomento in almeno un paio di articoli, che quindi colgo l'occasione di segnalarvi qui sotto:
Stomachion
giovedì 28 marzo 2019
L'unicità della realtà
Indeciso fino all'ultimo su cosa scrivere, alla fine mi viene in mente che posso pescare dal solito pozzo delle bozze sparse qua e là per una rapida segnalazione di un papero pubblicato su arXiv nel 2013, A quantum approach to the uniqueness of Reality:
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