Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Path Integral Quantization of the First Order Einstein-Hilbert Action
  from its Canonical Structure   We consider the form of the path integral that follows from canonical
quantization and apply it to the first order form of the Einstein-Hilbert
action in $d > 2$ dimensions. We show that this is inequivalent to what is
obtained from applying the Faddeev-Popov (FP) procedure directly. Due to the
presence of tertiary first class constraints, the measure of the path integral
is found to have a substantially different structure from what arises in the FP
approach. In addition, the presence of second class constraints leads to
non-trivial ghosts, which cannot be absorbed into the normalization of the path
integral. The measure of the path integral lacks manifest covariance.

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The categories of this paper are: nlin
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The categories of this paper are: nucl-th
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The categories of this paper are: quant-ph
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The categories of this paper are: econ
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The categories of this paper are: chem-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: solv-int
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The categories of this paper are: math-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: stat
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The categories of this paper are: adap-org
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The categories of this paper are: supr-con
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The categories of this paper are: plasm-ph
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The categories of this paper are: cs
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The categories of this paper are: atom-ph
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The categories of this paper are: q-alg