Speaker: Prof. John Baez
Title: New Progress in Spin Foam Models
Abstract: While the challenge of finding spin foam models with a well-behaved large-scale limit remains open, there has recently been interesting progress in a number of other directions. These include: relating spin foam models to the Feynman diagram formulation of ordinary quantum field theory on flat spacetime, finding a natural home for point particles in the spin foam formulation of 3d quantum gravity, and exploring a new background-free perturbative formulation of 4d gravity based on the BF formulation of the MacDowell-Mansouri theory. We hope to show that the ideas involved are beautiful and simple.
Talk: Transparencies, Recorded Talk