Loop quantum cosmology from group field theory

Gianluca Calcagni
Phys. Rev. D 90, 064047 – Published 24 September 2014

Abstract

We show that the effective dynamics of the recently proposed isotropic condensate state of group field theory with Laplacian kinetic operator can be equivalent to that of homogeneous and isotropic loop quantum cosmology in the improved dynamics quantization scheme, where the area of elementary holonomy plaquettes is constant. This constitutes a somewhat surprising example of a cosmological model of quantum gravity where the operations of minisuperspace symmetry reduction and quantization can actually commute.

  • Received 1 August 2014

DOI:https://doi.org/10.1103/PhysRevD.90.064047

© 2014 American Physical Society

Authors & Affiliations

Gianluca Calcagni

  • Instituto de Estructura de la Materia, CSIC, Serrano 121, 28006 Madrid, Spain

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Issue

Vol. 90, Iss. 6 — 15 September 2014

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