Abstract
We re-examine Peres' statement “opposite momenta lead to opposite directions”. It will be shown that Peres' statement is only valid in the large distance or large time limit. In the short distance or short time limit an additional deviation from perfect alignment occurs due to the uncertainty of the location of the source. This error contribution plays a major role in Popper's orginal experimental proposal. Peres' statement applies rather to the phenomenon of optical imaging, which was regarded by him as a verification of his statement. This is because this experiment can in a certain sense be seen as occurring in the large distance limit. We will also reconsider both experiments from the viewpoint of Bohmian mechanics. In Bohmian mechanics particles with perfectly opposite momenta will move in opposite directions. In addition it will prove particularly useful to use Bohmian mechanics because the Bohmian trajectories coincide with the conceptual trajectories drawn by Pittman et al. In this way Bohmian mechanics provides a theoretical basis for these conceptual trajectories.
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Struyve, W., De Baere, W., De Neve, J. et al. On Peres' Statement “Opposite Momenta Lead to Opposite Directions,” Decaying Systems and Optical Imaging. Foundations of Physics 34, 963–985 (2004). https://doi.org/10.1023/B:FOOP.0000034224.37659.96
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DOI: https://doi.org/10.1023/B:FOOP.0000034224.37659.96