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Jan 26, 2021 at 3:24 history became hot network question
Jan 25, 2021 at 22:01 answer added Carlo Beenakker timeline score: 7
Jan 25, 2021 at 20:49 comment added Christopher Beem If you want to make sense of the kinds of expressions physicists like to use in connection with observables with continuous spectrum, you will probably want to think in terms of the spectral theorem. I think you should interpret your first equation in terms of the direct integral formulation of the spectral theorem for the position operator on $L^2(\mathbb{R})$.
Jan 25, 2021 at 19:15 history asked MathMath CC BY-SA 4.0