Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Effective constraint algebras with structure functions   This article presents the result that fluctuations and higher moments of a
state do not imply quantum corrections in structure functions of constrained
systems. Consequences for canonical quantum gravity, whose structure functions
encode space-time structure, are discussed. In particular, deformed algebras
found in models of loop quantum gravity provide reliable information even in
the Planck regime.

35
The categories of this paper are: mtrl-th
16
The categories of this paper are: stat
8
The categories of this paper are: hep-ex
15
The categories of this paper are: nucl-ex
13
The categories of this paper are: quant-ph
18
The categories of this paper are: econ
23
The categories of this paper are: solv-int
24
The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
4
The categories of this paper are: cond-mat
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con