How to (path) integrate by differentiating
Achim Kempf - University of Waterloo
Vidotto, F. (2015). What if the universe accelerates because time is discrete?. Perimeter Institute. https://pirsa.org/15060007
Vidotto, Francesca. What if the universe accelerates because time is discrete?. Perimeter Institute, Jun. 05, 2015, https://pirsa.org/15060007
@misc{ pirsa_PIRSA:15060007,
doi = {10.48660/15060007},
url = {https://pirsa.org/15060007},
author = {Vidotto, Francesca},
keywords = {Quantum Gravity},
language = {en},
title = {What if the universe accelerates because time is discrete?},
publisher = {Perimeter Institute},
year = {2015},
month = {jun},
note = {PIRSA:15060007 see, \url{https://pirsa.org}}
}
In order to introduce the cosmological constant in a simplicial geometry, constant curvature should be introduced on simplex faces. This yields a compactification of the phase space and the finiteness of the Hilbert for each link. Not only the intrinsic, but also the extrinsic geometry turns out to be discrete, pointing to discreetness of time, in addition to space.