Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Bound-State Solutions of Dirac Equation for Kratzer Potential with
  Pseudoscalar-Coulomb Term   We present exact analytical solutions of the Dirac equation in
$(1+1)$-dimensions for the generalized Kratzer potential by taking the
pseudoscalar interaction term as an attractive Coulomb potential. We study the
problem for a particular (spin) symmetry of the Dirac Hamiltonian. After a
qualitative analyse, we study the results for some special cases such as
Dirac-Coulomb problem in the existence of the pseudoscalar interaction, and the
"pure" Coulomb problem by discussing some points about pseudospin and spin
symmetries in one dimension. We also plot some figures representing the
dependence of the energy on quantum number, and potential parameters.

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The categories of this paper are: gr-qc
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The categories of this paper are: q-fin
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The categories of this paper are: cs
24
The categories of this paper are: dg-ga
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The categories of this paper are: hep-ex
4
The categories of this paper are: cond-mat
33
The categories of this paper are: plasm-ph
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
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The categories of this paper are: hep-ph
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The categories of this paper are: astro-ph
37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
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The categories of this paper are: nucl-th