355 citations · 963 across the 12 of their papers we have counts for
4 papers · 1 filter
A New Spin Foam Model for 4d Gravity
Laurent Freidel, Kirill Krasnov
Starting from Plebanski formulation of gravity as a constrained BF theory we propose a new spin foam model for 4d Riemannian quantum gravity that generalises the well-known Barrett…
Linearized dynamics from the 4-simplex Regge action
Bianca Dittrich, Laurent Freidel, Simone Speziale
We study the relation between the hessian matrix of the riemannian Reggae action on a 4-simplex and linearized quantum gravity. We give an explicit formula for the hessian as a fun…
A group field theory for 3d quantum gravity coupled to a scalar field
Laurent Freidel, Daniele Oriti, James Ryan
We present a new group field theory model, generalising the Boulatov model, which incorporates both 3-dimensional gravity and matter coupled to gravity. We show that the Feynman di…
Ponzano-Regge model revisited II: Equivalence with Chern-Simons
Laurent Freidel, David Louapre
We provide a mathematical definition of the gauge fixed Ponzano-Regge model showing that it gives a measure on the space of flat connections whose volume is well defined. We then s…