Relational dynamics in an emergent spacetime context
APA
Marchetti, L. (2021). Relational dynamics in an emergent spacetime context. Perimeter Institute. https://pirsa.org/21060115
MLA
Marchetti, Luca. Relational dynamics in an emergent spacetime context. Perimeter Institute, Jun. 18, 2021, https://pirsa.org/21060115
BibTex
@misc{ pirsa_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}, year = {2021}, month = {jun}, note = {PIRSA:21060115 see, \url{https://pirsa.org}} }
University of New Brunswick
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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.