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- W4384007569 abstract "We apply Brunetti and Fredenhagen's [Phys. Rev. A 66 (2002) 044101] concept of the time of occurrence of an event in quantum mechanics to the example of scattering off a spherical potential. Thereby, we re-derive the expression of Froissart, Goldberger, and Watson [Phys. Rev. 131 (1963) 2820] for the angular time delay, clarifying some conceptual issues with their derivation. We also present an elementary re-derivation of the space shift (essentially the impact parameter) defined in the quantum mechanical context by the same authors. We clarify the relation of both quantities to their classical counterparts in the context of the WKB approximation. As an example, we apply the concepts to scattering at a hard sphere. We find pronounced peaks in the both the time delay and the space shift at the minima of intensity in the forward diffraction region for short wavelength scattering and discuss whether these could in principle be observable." @default.
- W4384007569 created "2023-07-13" @default.
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- W4384007569 date "2023-07-21" @default.
- W4384007569 modified "2023-09-25" @default.
- W4384007569 title "Angular time delay in quantum mechanical scattering" @default.
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- W4384007569 doi "https://doi.org/10.1088/1402-4896/ace703" @default.
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