Times of arrival: Bohm beats Kijowski

Details Times of arrival: Bohm beats Kijowski Times of arrival: Bohm beats Kijowski

2005-04-25

arxiv.org/abs/quant-ph/0504185v1

Physics

Quantum Physics

9 pages

Scientific paper

10.1088/0305-4470/38/39/010

We prove that the Bohmian arrival time of the 1D Schroedinger evolution violates the quadratic form structure on which Kijowski's axiomatic treatment of arrival times is based. Within Kijowski's framework, for a free right moving wave packet, the various notions of arrival time (at a fixed point x on the real line) all yield the same average arrival time. We derive an inequality relating the average Bohmian arrival time to the one of Kijowksi. We prove that the average Bohmian arrival time is less than Kijowski's one if and only if the wave packet leads to position probability backflow through x. Otherwise the two average arrival times coincide.

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