Weak Measurements and Conditional Probabilities of Bound Systems

Weak measurements are currently used to directly measure wavefunctions (1),(2). In this note, we compare the formalism of weak measurements with that of conditional probabilities P(p/x) arguing that such probabilities may also be directly measured and follow directly from the weak measurement formalism. This seems to be a shift in thinking from the approach of formulating quantum relationships in terms of the spatial density W*(x)W(x) and a*(p)a(p) used in the Heisenberg uncertainty relationship and Ehrenfest’s relationships