Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The covariance of chiral fermions theory   The quasiclassical theory of massless chiral fermions is considered. The
effective action is derived using time-dependent variational principle which
provides a clear interpretation of relevant canonical variables. As a result
their transformation properties under the action of Lorentz group are derived
from first principles.

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The categories of this paper are: quant-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: funct-an
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The categories of this paper are: econ
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The categories of this paper are: chao-dyn
34
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: math-ph
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The categories of this paper are: stat
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The categories of this paper are: hep-lat
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The categories of this paper are: cond-mat
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The categories of this paper are: q-bio
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The categories of this paper are: ao-sci
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The categories of this paper are: adap-org
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The categories of this paper are: q-fin
25
The categories of this paper are: patt-sol