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Some Remarks on the Semi-Classical Limit of Quantum Gravity

Etera R. Livine
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Abstract

One of the most important issues in quantum gravity is to identify its semi-classical regime. First the issue is to define for we mean by a semi-classical theory of quantum gravity, then we would like to use it to extract physical predictions. Writing an effective theory on a flat background is a way to address this problem and I explain how the non-commutative spacetime of deformed special relativity is the natural arena for such considerations. On the other hand, I discuss how the definition of the semi-classical regime can be formulated in a background independent fashion in terms of quantum information and renormalisation of geometry.

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Etera R. Livine. 2005-01-25. Some Remarks on the Semi-Classical Limit of Quantum Gravity. https://doi.org/10.1590/s0103-97332005000300013

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