Causal Loops and Collapse in the Transactional Interpretation of Quantum Mechanics.

Abstract

Cramer's transactional interpretation of quantum mechanics is reviewed, and a number of issues related to advanced interactions and state vector collapse are analyzed. Where some have suggested that Cramer's predictions may not be correct or definite, I argue that they are, but I point out that the classical-quantum distinction problem in the Copenhagen interpretation has its parallel in the transactional interpretation. RésuméL'interprétation transactionnelle de la mécanique quantique, proposée par J. G. Cramer, est sommairement revue, et quelques questions liées aux interactions avancées età l'effondrement du vecteur d'état sont analysées. Certains ont suggéré que les prédictions de l'interprétation de Cramer ne sont pas correctes ou ne sont pas bien définies. Je chercheà montrer qu'au contraire elles le sont, mais je signale que le problème de la distinction du classique et du quantique, inhérentà l'interprétation de Copenhague, a son parallèle dans l'interprétation transactionnelle.

The transactional interpretation and its evolution into the 21st century: An overview

“…He argued that this resulted in an inconsistency concerning the existence of a confirmation from the side with the moveable detector, as well as inconsistency in the assigned probabilities. This issue has been addressed and resolved by Marchildon (2006) and Kastner (2006Kastner ( , 2012.…”

Entanglement swapping in the transactional interpretation of quantum mechanics

“…How can absorption by B always occur in that situation? An answer to Maudlin's challenge has been proposed in [13], and assumes as in Wheeler-Feynman electrodynamics that every offer wave is eventually absorbed. This is equivalent to putting a third detector (say C) at the far left.…”

“…Other contributions have stayed closer to the original approach and the block-universe picture of time [13,14].…”

Retrocausal quantum mechanics: Maudlin's challenge revisited

“…Hence Maudlin's challenge has not been addressed. Marchildon (2006) notes that when B does not swing round, the o¤er wave along the upper path is still absorbed somewhere; a particle taking this path would be absorbed by something eventually. Due to the retrocausal nature of the pseudotime sequence, it makes no di¤erence how far in the future this absorption event lies; the con…rmation wave is still received by the particle source at t 0 .…”

“…Of the extant responses to Maudlin's challenge, Berkovitz (2002), Kastner (2006) and Marchildon (2006) attempt to accommodate Maudlin's example within the existing TI, and Cramer (2005), Chiatti (2012) and Kastner (2012bKastner ( , 2013 work with modi…ed versions of the TI. I will start with the former.…”