Wigner’s friend and relational objectivity

Wigner’s friend and relational objectivity

Caslav Brukner
Institute for Quantum Optics and Quantum Information – Vienna

Publication

ABSTRACT

The `Wigner's friend' thought experiment illustrates the puzzling nature of quantum measurement. Časlav Brukner discusses how recent results suggest that in quantum theory the objectivity of measurement outcomes is relative to observation and observer.