In order to arrive at Bohmian mechanics from standard nonrelativistic
quantum mechanics one need do almost nothing. One need only complete the
usual quantum description in what is really the most obvious way: by
simply including the positions of the particles of a quantum system as
part of the state description of that system, allowing these positions
to evolve in the most natural way. The entire quantum formalism (including
the uncertainty principle, quantum randomness, the quantum statistics
for identical particles, and the role of operators as observables)
emerges from an analysis of this evolution. This can be expressed
succinctly (though in fact not succinctly enough) by declaring that the
essential innovation of Bohmian mechanics is the insight that particles
move. |