@Article{Borja_etal2012,
author="Borja, E. F.
and Garay, I.
and Vidotto, F.",
title="Learning about Quantum Gravity with a Couple of Nodes",
journal="Symmetry Integrability and Geometry-Methods and Applications",
year="2012",
publisher="Natl Acad Sci Ukraine, Inst Math",
volume="8",
pages="015--44pp",
optkeywords="discrete gravity; canonical quantization; spinors; spinfoam; quantum cosmology",
abstract="Loop Quantum Gravity provides a natural truncation of the infinite degrees of freedom of gravity, obtained by studying the theory on a given finite graph. We review this procedure and we present the construction of the canonical theory on a simple graph, formed by only two nodes. We review the U(N) framework, which provides a powerful tool for the canonical study of this model, and a formulation of the system based on spinors. We consider also the covariant theory, which permits to derive the model from a more complex formulation, paying special attention to the cosmological interpretation of the theory.",
optnote="WOS:000303831400001",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=1018), last updated on Thu, 31 May 2012 11:38:47 +0000",
issn="1815-0659",
doi="10.3842/SIGMA.2012.015",
opturl="http://arxiv.org/abs/1110.3020",
opturl="https://doi.org/10.3842/SIGMA.2012.015",
archivePrefix="arXiv",
eprint="1110.3020",
language="English"
}