Quantum Corrections in the Group Field Theory Formulation of the EPRL/FK Models
General Relativity and Quantum Cosmology
2011-03-07 v2
Abstract
We investigate the group field theory formulation of the EPRL/FK spin foam models. These models aim at a dynamical, i.e. non-topological formulation of 4D quantum gravity. We introduce a saddle point method for general group field theory amplitudes and compare it with existing results, in particular for a second order correction to the EPRL/FK propagator.
Keywords
Cite
@article{arxiv.1007.3150,
title = {Quantum Corrections in the Group Field Theory Formulation of the EPRL/FK Models},
author = {Thomas Krajewski and Jacques Magnen and Vincent Rivasseau and Adrian Tanasa and Patrizia Vitale},
journal= {arXiv preprint arXiv:1007.3150},
year = {2011}
}
Comments
36 pages, 5 figures; an appendix giving a more precise behaviour of the degenerate configuration case has been added; further comments on geometrogenesis as a group field theory phase transition are given; version accepted for publication in Phys Rev D