ABOUT POSITION MEASUREMENTS WHICH DO NOT SHOW THE BOHMIAN PARTICLE POSITION

This work is inspired by our discussions with David Bohm in different periods in Tel-Aviv, London, and South Carolina. We were excited by the results we obtained in the framework of two-state vector formalism about weak measurements (Aharonov and Vaidman 1990) and we were trying to understand these results using Bohm’s causal interpretation (Bohm 1952a,b). Both Bohm’s theory and the two-state vector formalism yield the same predictions for the results of experiments as the standard quantum theory. Therefore, clearly, there cannot be a technical contradiction between these two approaches. However, it is a legitimate question to ask how close or how different are the concepts of the two theories. Friction between the basic concepts might lead to a direction for the modification of quantum theory; the search for a useful modification was the goal of David Bohm.

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