Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hamiltonian analysis of unimodular gravity and its quantization in the
  connection representation   We perform the Hamiltonian analysis of unimodular gravity in terms of the
connection representation. The unimodular condition is imposed
straightforwardly into the action with a Lagrange multiplier. After classifying
constraints into first class and second class, the canonical quantization is
carried out. We consider the difference of the corresponding physical states
between unimodular gravity and general relativity.

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The categories of this paper are: chem-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: alg-geom
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The categories of this paper are: dg-ga
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The categories of this paper are: nucl-th
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The categories of this paper are: adap-org
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The categories of this paper are: econ
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The categories of this paper are: q-alg
14
The categories of this paper are: math-ph
16
The categories of this paper are: stat
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The categories of this paper are: supr-con
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The categories of this paper are: hep-ph
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The categories of this paper are: physics
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The categories of this paper are: hep-th
4
The categories of this paper are: cond-mat
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The categories of this paper are: patt-sol