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Article

Causal Intuition and Delayed-Choice Experiments

Independent Researcher, 3182 Stelling Drive, Palo Alto, CA 94303, USA
Entropy 2021, 23(1), 23; https://doi.org/10.3390/e23010023
Received: 25 November 2020 / Revised: 21 December 2020 / Accepted: 23 December 2020 / Published: 26 December 2020
(This article belongs to the Special Issue Quantum Theory and Causation)
The conventional explanation of delayed-choice experiments appears to violate our causal intuition at the quantum level. I reanalyze these experiments using time-reversed and time-symmetric formulations of quantum mechanics. The time-reversed formulation does not give the same experimental predictions. The time-symmetric formulation gives the same experimental predictions but actually violates our causal intuition at the quantum level. I explore the reasons why our causal intuition may be wrong at the quantum level, suggest how conventional causation might be recovered in the classical limit, propose a quantum analog to the classical block universe viewpoint, and speculate on implications of the time-symmetric formulation for cosmological boundary conditions. View Full-Text
Keywords: delayed-choice; causality; retrocausality; advanced action; numerical simulation delayed-choice; causality; retrocausality; advanced action; numerical simulation
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MDPI and ACS Style

Heaney, M.B. Causal Intuition and Delayed-Choice Experiments. Entropy 2021, 23, 23. https://doi.org/10.3390/e23010023

AMA Style

Heaney MB. Causal Intuition and Delayed-Choice Experiments. Entropy. 2021; 23(1):23. https://doi.org/10.3390/e23010023

Chicago/Turabian Style

Heaney, Michael B. 2021. "Causal Intuition and Delayed-Choice Experiments" Entropy 23, no. 1: 23. https://doi.org/10.3390/e23010023

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