Can Probabilities Be Negative? – What this question teaches us about quantum theory
Автор: Steven G
Загружено: 2021-08-22
Просмотров: 38841
Описание:
A video for 3Blue1Brown’s Summer of Math Exposition 1. See how thinking about negative probabilities can lead us to deep ideas in quantum theory.
00:00 Introduction
01:27 Example with negative probability
09:09 The Double Slit
13:01 Closing thoughts
Corrections:
At 2:04, I messed up the conventional notation for conditional probability. It should read “P(1|S),” which means “The probability of event 1 happening given that S happened.”
At 5:16, 0.6*0.3=0.18, not 0.12. So the final answer should have been 0.74 instead of 0.68.
Similarly, at 5:36, the number on the farthest right branch should be 0.12, not 0.18. Basically, I accidentally switched the numbers coming out of B when I made the slides. This does not affect the main points of the video.
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