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Delayed Choice Experiments and the Bohm Approach | | B. J. Hiley
; R. E. Callaghan
; | | Date: |
19 Feb 2016 | | Abstract: | The delayed choice experiments of the type introduced by Wheeler and extended
by Englert, Scully, S"ussmann and Walther [ESSW], and others, have formed a
rich area for investigating the puzzling behaviour of particles undergoing
quantum interference. The surprise provided by the original delayed choice
experiment, led Wheeler to the conclusion that "no phenomenon is a phenomenon
until it is an observed phenomenon", a radical explanation which implied that
"the past has no existence except as it is recorded in the present". However
Bohm, Dewdney and Hiley have shown that the Bohm interpretation gives a
straightforward account of the behaviour of the particle without resorting to
such a radical explanation. The subsequent modifications of this experiment led
both Aharonov and Vaidman and [ESSW] to conclude that the resulting Bohm-type
trajectories in these new situations produce unacceptable properties. For
example, if a cavity is placed in one arm of the interferometer, it will be
excited by a particle travelling down the {em other} arm. In other words it is
the particle that does {em not} go through the cavity that gives up its
energy! If this analysis is correct, this behaviour would be truly bizarre and
could only be explained by an extreme non-local transfer of energy that is even
stronger than that required in an EPR-type processes. In this paper we show
that this conclusion is not correct and that if the Bohm interpretation is used
correctly, it gives a {em local} explanation, which actually corresponds
exactly to the standard quantum mechanics explanation offered by Englert,
Scully, S"ussmann and Walther [ESSW]. | | Source: | arXiv, 1602.6100 | | Services: | Forum | Review | PDF | Favorites | |
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