Does measurement reverse the direction of intrinsic time?

Abstract

A new interpretation of the formula for transition probabilities in quantum theory is proposed, based on the relativistic version of the Feynman path integral. According to this interpretation both the transition amplitude and its complex conjugate are treated on equal footing. They differ only in having opposite directions of the intrinsic time. It is conjectured that both processes, the one that corresponds to the amplitude and the one that corresponds to the complex conjugate amplitude, are equally real and that they both take place in space-time. Every time a measurement occurs, the direction of the intrinsic time is reversed. In this formulation the dilemma faced by Schrödinger in 1926, which sign of i to choose in the wave equation, does not arise.