Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Ashtekar Constraint Surface as Projection of Hilbert-Palatini One   The Hilbert-Palatini (HP) Lagrangian of general relativity being written in
terms of selfdual and antiselfdual variables contains Ashtekar Lagrangian
(which governs the dynamics of the selfdual sector of the theory on condition
that the dynamics of antiselfdual sector is not fixed). We show that
nonequivalence of the Ashtekar and HP quantum theories is due to the specific
form (of the "loose relation" type) of constraints which relate self- and
antiselfdual variables so that the procedure of (canonical) quantisation of
such the theory is noncommutative with the procedure of excluding antiselfdual
variables.

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The categories of this paper are: plasm-ph
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The categories of this paper are: astro-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: adap-org
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The categories of this paper are: funct-an
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The categories of this paper are: hep-th
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The categories of this paper are: chao-dyn
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The categories of this paper are: quant-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: chem-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: cmp-lg
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The categories of this paper are: hep-lat
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The categories of this paper are: nucl-ex
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The categories of this paper are: solv-int