The discussion of the quantum mechanical Wigner’s friend thought experiment has regained intensity. Recent theoretical results and experimental tests restrict the possibility of maintaining an observer-independent notion of measurement outcomes.
This is a preview of subscription content, access via your institution
Access options
Access Nature and 54 other Nature Portfolio journals
Get Nature+, our best-value online-access subscription
$29.99 / 30 days
cancel any time
Subscribe to this journal
Receive 12 print issues and online access
$209.00 per year
only $17.42 per issue
Buy this article
- Purchase on Springer Link
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
References
Brukner, C. in Quantum[Un]Speakables II: Half a Century of Bell’s Theorem (eds Bertlmann, R. & Zeilinger, A.) 95–117 (Springer, 2017).
Brukner, C. Entropy 20, 350 (2018).
Frauchiger, D. & Renner, R. Nat. Commun. 9, 3711 (2018).
Proietti, M. et al. Sci. Adv. 5, eaaw9832 (2019).
Wigner, E. P. in The Scientist Speculates (ed. Good, I. J.) 284–302 (Heinemann, 1961).
Bong, K.-W. et al. Nat. Phys. https://doi.org/10.1038/s41567-020-0990-x (2020).
Bell, J. S. Physics 1, 195–200 (1964).
Miller, J. L. Phys. Today 69, 14 (2016).
Cabello A. in What is Quantum Information? (eds Lombardi, O. et al.) 138–144 (Cambridge Univ. Press, 2017).
Bassi, A. & Ghirardi, G. Phys. Rep 379, 257–426 (2003).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Brukner, Č. Facts are relative. Nat. Phys. 16, 1172–1174 (2020). https://doi.org/10.1038/s41567-020-0984-8
Published:
Issue Date:
DOI: https://doi.org/10.1038/s41567-020-0984-8
This article is cited by
-
Securing the objectivity of relative facts in the quantum world
Foundations of Physics (2022)
-
A Quintet of Quandaries: Five No-Go Theorems for Relational Quantum Mechanics
Foundations of Physics (2021)
-
QBism and Relational Quantum Mechanics compared
Foundations of Physics (2021)