Relativistic causality principles in QFT

          @misc{ scivideos_PIRSA:24090095,
            doi = {10.48660/24090095},
            url = {https://pirsa.org/24090095},
            author = {Fraser, Doreen},
            keywords = {Quantum Foundations, Quantum Information},
            language = {en},
            title = {Relativistic causality principles in QFT},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2024},
            month = {sep},
            note = {PIRSA:24090095 see, \url{https://scivideos.org/index.php/pirsa/24090095}}
          }
          

Abstract

In QFT, one aspect of relativistic causality is the principle of microcausality, which requires that observables associated with spacelike separated regions commute. But this principle is not by itself sufficient to rule out superluminal signalling, as examples of ‘impossible’ measurements demonstrate. Representations of the dynamics that respect relativity also play a necessary role in upholding relativistic causality in QFT. This talk will focus on the important role that principles of relativistic dynamics play in representations of local measurement in QFT.