PIRSA:09050087

Video URL

https://pirsa.org/09050087

Is the cosmological constant a nonlocal quantum residue of discreteness of the causal set type?

Sorkin, R. (2009). Is the cosmological constant a nonlocal quantum residue of discreteness of the causal set type?. Perimeter Institute for Theoretical Physics. https://pirsa.org/09050087

Sorkin, Rafael. Is the cosmological constant a nonlocal quantum residue of discreteness of the causal set type?. Perimeter Institute for Theoretical Physics, May. 27, 2009, https://pirsa.org/09050087 

          @misc{ scivideos_PIRSA:09050087,
            doi = {10.48660/09050087},
            url = {https://pirsa.org/09050087},
            author = {Sorkin, Rafael},
            keywords = {Quantum Gravity, Quantum Fields and Strings, Particle Physics, Cosmology},
            language = {en},
            title = {Is the cosmological constant a nonlocal quantum residue of discreteness of the causal set type?},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2009},
            month = {may},
            note = {PIRSA:09050087 see, \url{https://scivideos.org/pirsa/09050087}}
          }

Rafael Sorkin Perimeter Institute for Theoretical Physics

Talk numberPIRSA:09050087
DOI10.48660/09050087
Source RepositoryPIRSA
Collection
Talk Type Conference
Subject

Abstract

The currently accelerating Hubble expansion is in accord with the old heuristic prediction, from causal set theory, of a fluctuating and ever-present cosmological "constant''. More recently, a phenomenological model based on certain of the ideas behind the prediction has been devised, but it remains incomplete. I will review these developments and also mention a possible consequence for the dimensionality of spacetime.