PIRSA:05090001

Is a past-finite causal order the inner basis of spacetime?

Sorkin, R. (2005). Is a past-finite causal order the inner basis of spacetime?. Perimeter Institute. https://pirsa.org/05090001

Sorkin, Rafael. Is a past-finite causal order the inner basis of spacetime?. Perimeter Institute, Sep. 07, 2005, https://pirsa.org/05090001 

          @misc{ pirsa_PIRSA:05090001,
            doi = {10.48660/05090001},
            url = {https://pirsa.org/05090001},
            author = {Sorkin, Rafael},
            keywords = {Quantum Gravity},
            language = {en},
            title = {Is a past-finite causal order the inner basis of spacetime?},
            publisher = {Perimeter Institute},
            year = {2005},
            month = {sep},
            note = {PIRSA:05090001 see, \url{https://pirsa.org}}
          }

Rafael Sorkin

Perimeter Institute for Theoretical Physics

Talk number
PIRSA:05090001
Collection
Talk Type
Subject
Abstract
The causal set -- mathematically a finitary partial order -- is a candidate discrete substratum for spacetime. I will introduce this idea and describe some aspects of causal set kinematics, dynamics, and phenomenology, including, as time permits, a notion of fractal dimension, a (classical) dynamics of stochastic growth, and an idea for explaining some of the puzzling large numbers of cosmology. I will also mention some general insights that have emerged from the study of causal sets, the most recent one concerning the role of intermediate length-scales in discrete spacetime theories.