Video URL

https://pirsa.org/21060115

Relational dynamics in an emergent spacetime context

Marchetti, L. (2021). Relational dynamics in an emergent spacetime context. Perimeter Institute for Theoretical Physics. https://pirsa.org/21060115

Marchetti, Luca. Relational dynamics in an emergent spacetime context. Perimeter Institute for Theoretical Physics, Jun. 18, 2021, https://pirsa.org/21060115 

          @misc{ scivideos_PIRSA:21060115,
            doi = {10.48660/21060115},
            url = {https://pirsa.org/21060115},
            author = {Marchetti, Luca},
            keywords = {Quantum Foundations},
            language = {en},
            title = {Relational dynamics in an emergent spacetime context},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2021},
            month = {jun},
            note = {PIRSA:21060115 see, \url{https://scivideos.org/pirsa/21060115}}
          }

Luca Marchetti University of New Brunswick

DOI 10.48660/21060115
Source Repository PIRSA
Collection
Talk Type Conference
Subject

Abstract

I discuss the new dimension that the relational approach to the problem of time takes in quantum gravity contexts in which spacetime and geometry are understood as emergent. I argue that, in this case, the relational strategy is best realized at an approximate and effective level, after suitable coarse graining and only in terms of special quantum states. I then show a concrete realization of such effective relational dynamics in the context of a cosmological application of the tensorial group field theory formalism for quantum gravity.