Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Diffeomorphism invariance in spherically symmetric loop quantum gravity   We study the issue of the recovery of diffeomorphism invariance in the
recently introduced loop quantum gravity treatment of the exterior
Schwarzschild space-time. Although the loop quantization agrees with the
quantization in terms of metric variables in identifying the physical Hilbert
space, we show that diffeomorphism invariance in space-time is recovered with
certain limitations due to the use of holonomic variables in the loop treatment
of the model. This resembles behaviors that are expected in the full theory.

22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
7
The categories of this paper are: hep-th
36
The categories of this paper are: cmp-lg
11
The categories of this paper are: hep-lat
3
The categories of this paper are: physics
24
The categories of this paper are: dg-ga
27
The categories of this paper are: comp-gas
15
The categories of this paper are: nucl-ex
31
The categories of this paper are: ao-sci
30
The categories of this paper are: q-alg
26
The categories of this paper are: bayes-an
10
The categories of this paper are: q-bio
12
The categories of this paper are: nucl-th
13
The categories of this paper are: quant-ph
9
The categories of this paper are: nlin