2 papers
quant-ph2026
Generalising Aumann's Agreement Theorem
Matthew Leifer, Cristhiano Duarte
According to Aumann's celebrated theorem, rational agents cannot agree to disagree. In other words, agents who once shared a common prior probability distribution and who have comm…
quant-ph2024
A review and analysis of six extended Wigner's friend arguments
David Schmid, Yìlè Yīng, Matthew Leifer
The Wigner's friend thought experiment was intended to illustrate the difficulty one has in describing an agent as a quantum system when that agent performs a measurement. While it…