Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Relativistic and nonrelativistic bound states of the isotonic oscillator
  by Nikiforov-Uvarov method   A nonpolynomial one-dimensional quantum potential in the form of an isotonic
oscillator (harmonic oscillator with a centripetal barrier) is studied. We
provide the non-relativistic bound state energy spectrum E_{n} and the wave
functions {\psi}_{n}(x) in terms of the associated Laguerre polynomials in the
framework of the Nikiforov-Uvarov method. Under the spin and pseudospin
symmetric limits, the analytic eigenvalues and the corresponding two-component
upper- and lower-spinors of the Dirac particle are obtained, in closed form.

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The categories of this paper are: comp-gas
6
The categories of this paper are: astro-ph
4
The categories of this paper are: cond-mat
21
The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an
29
The categories of this paper are: funct-an
28
The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th
19
The categories of this paper are: eess
34
The categories of this paper are: chem-ph
15
The categories of this paper are: nucl-ex
0
The categories of this paper are: hep-ph
8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
7
The categories of this paper are: hep-th
10
The categories of this paper are: q-bio