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arXiv · 1110.3020

Learning about Quantum Gravity with a Couple of Nodes

Enrique F. Borja·Iñaki Garay·Francesca Vidotto
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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.

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Enrique F. Borja, Iñaki Garay, Francesca Vidotto. 2012-03-25. Learning about Quantum Gravity with a Couple of Nodes. https://doi.org/10.3842/sigma.2012.015

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