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arXiv · 1307.4687

On the properties of the irrotational dust model

Jedrzej Świeżewski
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Abstract

In this note we analyze the model of the irrotational dust used recently to deparametrize gravitational action. We prove that the remarkable fact that the Hamiltonian is not a square root is a direct consequence of the time-gauge choice in this model. No additional assumptions or sign choices are necessary to obtain this crucial feature. In this way we clarify a point recently debated in the literature.

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Jedrzej Świeżewski. 2013-09-20. On the properties of the irrotational dust model. https://doi.org/10.1088/0264-9381%2F30%2F23%2F237001

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