PIRSA:24090095

Relativistic causality principles in QFT

Fraser, D. (2024). Relativistic causality principles in QFT. Perimeter Institute. https://pirsa.org/24090095

Fraser, Doreen. Relativistic causality principles in QFT. Perimeter Institute, Sep. 19, 2024, https://pirsa.org/24090095 

          @misc{ pirsa_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},
            year = {2024},
            month = {sep},
            note = {PIRSA:24090095 see, \url{https://pirsa.org}}
          }

Doreen Fraser University of Waterloo

Talk numberPIRSA:24090095
DOI10.48660/24090095
Collection
Talk Type Conference
Subject

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.