Entropy, Volume 26, Issue 1
2024 January - 96 articles
Cover Story: Schrödinger’s essay about a cat in a superposition of dead and alive states presents an inconsistency between quantum mechanics and macroscopic realism, which posits the cat to be dead or alive prior to observation. The paradox is clarified by examining two entangled “cats”. The “cats” are fields; the spin up and down states are macroscopically distinct coherent states, and the measurement settings are adjusted using nonlinear interactions. Quantum mechanics predicts a violation of a Bell inequality, hence falsifying “deterministic macroscopic realism”. However, by distinguishing between the cat-systems before and after the setting interactions, and analyzing the Q-function, one finds consistency with a subset of the Einstein–Podolsky–Rosen premises, meaning that “weak macroscopic realism” is preserved. View this paper - Issues are regarded as officially published after their release is announced to the table of contents alert mailing list .
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