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Mar 13, 2023 at 15:30 answer added memorial timeline score: 1
Aug 16, 2018 at 13:54 vote accept asv
Aug 16, 2018 at 8:08 answer added Carlo Beenakker timeline score: 2
Aug 16, 2018 at 3:14 answer added Zhou timeline score: 1
Aug 15, 2018 at 22:30 comment added Igor Khavkine The answer to the second question is the standard free particle particle propagator from quantum mechanics: $K(x,t) = (C_1/t^a) e^{iC_2 x^2/t}$ (exercise: fix the right constants $a, C_1, C_2$). $K(x,t)$ is not exactly the Fourier transform from the first question, they are related, as you say. I don't know if that's enough for you.
Aug 15, 2018 at 22:13 history asked asv CC BY-SA 4.0