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arXiv · 2306.10934

Is the diagonal case a general picture for Loop Quantum Cosmology?

Matteo Bruno·Giovanni Montani
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Abstract

The correct implementation of the Loop Quantum Gravity to the early homogeneous Universe has been the subject of a long debate in the literature because the SU(2) symmetry cannot be properly retained. The role of this symmetry is expressed by the Gauss constraint. Here, a non-vanishing Gauss constraint is found. However, we show that using suitable variables, it can be recast into three Abelian constraints, justifying the absence of such a symmetry in Loop Quantum Cosmology.

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Matteo Bruno, Giovanni Montani. 2023-06-19. Is the diagonal case a general picture for Loop Quantum Cosmology?. https://doi.org/10.1103/physrevd.108.046003

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