Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Gravitational quantum states as finite representations of the Lorentz
  group   A manifestly Lorentz-covariant formulation of Loop Quantum Gravity (LQG) is
given in terms of finite-dimensional representations of the Lorentz group. The
formulation accounts for discrete symmetries, such as parity and time-reversal,
and it establishes a link with Wigner classification of particles. The
resulting quantum model can be seen as LQG with the internal $SU(2)\otimes
SU(2)$ group and it is free of the Immirzi parameter, while the scalar
constraint is just the Euclidean part.

9
The categories of this paper are: nlin
23
The categories of this paper are: solv-int
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
28
The categories of this paper are: alg-geom
29
The categories of this paper are: funct-an
26
The categories of this paper are: bayes-an
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The categories of this paper are: eess
18
The categories of this paper are: econ
33
The categories of this paper are: plasm-ph
14
The categories of this paper are: math-ph
24
The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
7
The categories of this paper are: hep-th