We investigate the group field theory formulation of the Engle-Pereira-Rovelli-Livine/Freidel-Krasnov (EPRL/FK spin-foam models. These models aim at a dynamical, i.e., nontopological 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.
Quantum corrections in the group field theory formulation of the EPRL/FK Models / T., Krajewski; J., Magnen; V., Rivasseau; A., Tanasa; Vitale, Patrizia. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - STAMPA. - 82:(2010), pp. 124069-1-124069-20. [10.1103/PhysRevD.82.124069]
Quantum corrections in the group field theory formulation of the EPRL/FK Models
VITALE, PATRIZIA
2010
Abstract
We investigate the group field theory formulation of the Engle-Pereira-Rovelli-Livine/Freidel-Krasnov (EPRL/FK spin-foam models. These models aim at a dynamical, i.e., nontopological 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.| File | Dimensione | Formato | |
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