Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Geometry from quantum particles   We investigate the possibility that a background independent quantum theory
of gravity is not a theory of quantum geometry. We provide a way for global
spacetime symmetries to emerge from a background independent theory without
geometry. In this, we use a quantum information theoretic formulation of
quantum gravity and the method of noiseless subsystems in quantum error
correction. This is also a method that can extract particles from a quantum
geometric theory such as a spin foam model.

0
The categories of this paper are: hep-ph
22
The categories of this paper are: chao-dyn
3
The categories of this paper are: physics
26
The categories of this paper are: bayes-an
23
The categories of this paper are: solv-int
4
The categories of this paper are: cond-mat
13
The categories of this paper are: quant-ph
20
The categories of this paper are: acc-phys
12
The categories of this paper are: nucl-th
2
The categories of this paper are: math
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
14
The categories of this paper are: math-ph
17
The categories of this paper are: q-fin
6
The categories of this paper are: astro-ph
18
The categories of this paper are: econ