Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Bound states of the Dirac equation for the PT-symmetric generalized
  Hulthen potential by the Nikiforov-Uvarov method   The one-dimensional Dirac equation is solved for the PT-symmetric generalized
Hulthen potential. The Nikiforov-Uvarov method which is based on solving the
second-order linear differential equations by reduction to a generalized
equation of hypergeometric type is used to obtain exact energy eigenvalues and
corresponding eigenfunctions.

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The categories of this paper are: atom-ph
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The categories of this paper are: adap-org
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The categories of this paper are: q-alg
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The categories of this paper are: stat
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The categories of this paper are: q-fin
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The categories of this paper are: nucl-ex
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The categories of this paper are: dg-ga
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The categories of this paper are: chao-dyn
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The categories of this paper are: acc-phys
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The categories of this paper are: eess
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The categories of this paper are: astro-ph
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The categories of this paper are: econ
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The categories of this paper are: solv-int
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The categories of this paper are: cond-mat
2
The categories of this paper are: math
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The categories of this paper are: gr-qc