PIRSA:24090094

Quantum discreteness and spacetime causality: what's in the mix?

Surya, S. (2024). Quantum discreteness and spacetime causality: what's in the mix?. Perimeter Institute. https://pirsa.org/24090094

Surya, Sumati. Quantum discreteness and spacetime causality: what's in the mix?. Perimeter Institute, Sep. 19, 2024, https://pirsa.org/24090094 

          @misc{ pirsa_PIRSA:24090094,
            doi = {10.48660/24090094},
            url = {https://pirsa.org/24090094},
            author = {Surya, Sumati},
            keywords = {Quantum Foundations, Quantum Information},
            language = {en},
            title = {Quantum discreteness and spacetime causality: what{\textquoteright}s in the mix?},
            publisher = {Perimeter Institute},
            year = {2024},
            month = {sep},
            note = {PIRSA:24090094 see, \url{https://pirsa.org}}
          }

Sumati Surya

Raman Research Institute

Talk number
PIRSA:24090094
Collection
Talk Type
Subject
Abstract
The notion of causality is intimately tied to both, a transitive ordering on events, and the possibility of unrelated events. Thus, any causality structure is a partially ordered set or poset. This is the case in Lorentzian spacetime, which possesses a single time direction. In causal set quantum gravity, this spacetime causality structure is "first quantised" by discretising it. However, as with any dynamical quantum theory of spacetime, background notions of causality are insufficient. I will discuss how ordering and discreteness, as manifested in the sequential growth paradigm, provide a broad framework for quantum dynamical notions of causality.