The analysis of Hardy's experiment revisited

TL;DR

This paper defends Hardy's experiment analysis against prior criticism, reaffirming that the contradiction with quantum theory is not due to the failure of the 'product rule' for elements of reality.

Contribution

It provides a rebuttal to Cohen and Hiley's critique, clarifying the interpretation of Hardy's experiment in quantum mechanics.

Findings

Cohen and Hiley's criticism is not sound

The contradiction with quantum theory is not due to the 'product rule' failure

Reaffirms the original analysis of Hardy's experiment

Abstract

Cohen and Hiley [Phys. Rev. A 52, 76 (1995)] have criticized the analysis of Hardy's gedanken experiment according to which the contradiction with quantum theory in Hardy's experiment arises due the failure of the "product rule" for the elements of reality of pre- and post-selected systems. It is argued that the criticism of Cohen and Hiley is not sound.