Abstract
We give a short review of the spin foam models of quantum gravity, with an emphasis on the Barret-Crane model. After explaining the shortcomings of the Barret-Crane model, we briefly discuss two new approaches, one based on the 3d spin foam state sum invariants for the embedded spin networks, and the other based on representing the string scattering amplitudes as 2d spin foam state sum invariants.
| Original language | English |
|---|---|
| Title of host publication | Mathematical, Theoretical and Phenomenological Challenges Beyond the Standard Model |
| Subtitle of host publication | Perspectives of the Balkan Collaborations |
| Publisher | World Scientific Publishing Co. |
| Pages | 88-93 |
| Number of pages | 6 |
| ISBN (Electronic) | 9789812702166 |
| ISBN (Print) | 9812561307, 9789812561305 |
| DOIs | |
| Publication status | Published - 1 Jan 2005 |
Bibliographical note
Publisher Copyright:© 2005 by World Scientific Publishing Co. Pte. Ltd. All rights reserved.