# Making sense of relativistic Wigner friend scenarios

**Authors:** J. Allam, A. Matzkin  
**arXiv:** [2310.04167](https://arxiv.org/abs/2310.04167)  
**Date:** 2023-10-06  
**Summary page:** https://www.summarizepaper.com/fr/arxiv-id/2310.04167v1/

## Abstract

Wigner-friend scenarios -- in which external agents describe a closed laboratory containing a friend making a measurement -- highlight the difficulties inherent to quantum theory when accounting for measurements. Recently, several works have investigated Wigner-friend scenarios with relativistic constraints, systematically resulting in a contradiction between observations made in different inertial reference frames. We examine in this paper the reasons for and the implications of these contradictions. Having in mind the well-known tensions between quantum theory and relativity, we will put a particular emphasis on the role of the relativistic constraints in these scenarios.