Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Approximate bound states of the Dirac equation with some physical
  quantum potentials   The approximate analytical solutions of the Dirac equations with the
reflectionless-type and Rosen-Morse potentials including the spin-orbit
centrifugal (pseudo-centrifugal) term are obtained. Under the conditions of
spin and pseudospin (pspin) symmetry concept, we obtain the bound state energy
spectra and the corresponding two-component upper- and lower-spinors of the two
Dirac particles by means of the Nikiforov-Uvarov (NU) method in closed form.
The special cases of the s-wave {\kappa}=\pm1 (l=l=0) Dirac equation and the
non-relativistic limit of Dirac equation are briefly studied.

12
The categories of this paper are: nucl-th
15
The categories of this paper are: nucl-ex
20
The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg
0
The categories of this paper are: hep-ph
35
The categories of this paper are: mtrl-th
26
The categories of this paper are: bayes-an
31
The categories of this paper are: ao-sci
23
The categories of this paper are: solv-int
9
The categories of this paper are: nlin
4
The categories of this paper are: cond-mat
10
The categories of this paper are: q-bio
18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
32
The categories of this paper are: atom-ph
2
The categories of this paper are: math