Time: 9. May 2011
Place: Quantum Gravity group, Centre de Physique Théorique de Luminy
Title: Recent research on graviton propagator in spin-foam models
The plan of the talk is to present and discuss some recent results and issues regarding the asymptotics of the flat-space boundary wavefunction for the graviton propagator, within the EPRL/FK spinfoam model. We shall also present a proposal to modify the vertex amplitude of the model in order to avoid those issues.