Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Some Remarks on the Semi-Classical Limit of Quantum Gravity   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.

33
The categories of this paper are: plasm-ph
24
The categories of this paper are: dg-ga
30
The categories of this paper are: q-alg
3
The categories of this paper are: physics
14
The categories of this paper are: math-ph
2
The categories of this paper are: math
17
The categories of this paper are: q-fin
23
The categories of this paper are: solv-int
27
The categories of this paper are: comp-gas
20
The categories of this paper are: acc-phys
18
The categories of this paper are: econ
12
The categories of this paper are: nucl-th
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
9
The categories of this paper are: nlin
7
The categories of this paper are: hep-th