Indefinite causal order with fixed temporal order for electrons and positrons
Quantum Physics
2022-03-03 v2 History and Philosophy of Physics
Abstract
We provide an analysis of indefinite causal orders in relativistic quantum mechanics based on the electron-positron picture of Feynman involving negative energy electrons moving backward in time. We show that genuine implementations of the paradigmatic quantum switch, but here violating some causal inequalities and with a fixed temporal order, become possible in extreme external electromagnetic field conditions allowing the presence of closed time-like curves.
Cite
@article{arxiv.2202.12886,
title = {Indefinite causal order with fixed temporal order for electrons and positrons},
author = {Aurélien Drezet},
journal= {arXiv preprint arXiv:2202.12886},
year = {2022}
}
Comments
Submitted for publications. Comments welcome! This version includes the supplemental file justifying the calculations