Exploring the limits of no backward in time signalling
Quantum Physics
2019-12-11 v6
Abstract
We present an operational and model-independent framework to investigate the concept of no-backwards-in-time signaling. We define no-backwards-in-time signaling conditions, closely related to the spatial no-signaling conditions. These allow for theoretical possibilities in which the future affects the past, nevertheless without signaling backwards in time. This is analogous to non-local but no-signaling spatial correlations. Furthermore, our results shed new light on situations with indefinite causal structure and their connection to quantum theory.
Cite
@article{arxiv.1708.00669,
title = {Exploring the limits of no backward in time signalling},
author = {Yelena Guryanova and Ralph Silva and Anthony J. Short and Paul Skrzypczyk and Nicolas Brunner and Sandu Popescu},
journal= {arXiv preprint arXiv:1708.00669},
year = {2019}
}
Comments
10 pages, 3 figures, v2: reference added