Discrete Time in Quantum Gravity

Francesca Vidotto (Radboud) gives a talk at the Workshop on the Problem of Time in Perspective (3-4 July, 2015) titled "Discrete Time in Quantum Gravity". Abstract: We study the quantization of geometry in the presence of a cosmological constant, using a discretiza- tion with constant-curvature simplices. Phase space turns out to be compact and the Hilbert space finite dimensional 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. We work in 2+1 dimensions, but these results may be relevant also for the physical 3+1 case.

You can listen to Discrete Time in Quantum Gravity online on Radio and Podcast. Open the player on this page to stream the available audio.

Discrete Time in Quantum Gravity is an episode from MCMP – Philosophy of Physics by MCMP Team.

This episode is 00:39:04 long.

This episode was published on Jul 9, 2015.

Yes. Use the heart button on the episode page to add it to your favorite episodes list.

Yes. This page shows related episodes from MCMP – Philosophy of Physics when more episodes are available from the podcast feed.