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Apr 6, 2023 at 11:40 history edited Qmechanic
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Sep 21, 2019 at 9:48 vote accept Jan Bos
Dec 14, 2017 at 3:42 comment added Zheng Liu Right. It can be recovered if you know the complex phase.
Dec 9, 2017 at 2:19 comment added Jan Bos @Zheng Liu I'm not so worried not having all information in $\psi$ if you do not need it to find solutions for $\rho$. But even so, following AFT's response you can express the complex phase of $\psi$ in $\rho$ though it is a functional form and cumbersome. So all information in the quantum state can still be found if you want it.
Dec 7, 2017 at 17:16 history tweeted twitter.com/StackPhysics/status/938819577777094657
Dec 7, 2017 at 13:13 answer added Emilio Pisanty timeline score: 4
Dec 7, 2017 at 11:00 history edited AccidentalFourierTransform CC BY-SA 3.0
deleted 1 character in body; edited title
Dec 7, 2017 at 10:57 answer added AccidentalFourierTransform timeline score: 16
Dec 7, 2017 at 7:50 history edited Qmechanic
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Dec 7, 2017 at 7:42 comment added Zheng Liu I think if you want to write down how the probability density changes in time, you basically get the continuity equation. As commented in the answer below, $\rho$ does not give all information of the quantum state.
Dec 7, 2017 at 7:33 answer added J.G. timeline score: 9
Dec 7, 2017 at 7:24 history edited J.G. CC BY-SA 3.0
Fixed a sign error
Dec 7, 2017 at 6:59 history asked Jan Bos CC BY-SA 3.0