Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Scalar-Scalar Ladder Model in the Unequal-Mass Case. III - Numerical
  Studies of the P-Wave Case -   The eigenvalue problem for the p-wave bound states formed by two unequal-mass
scalar particles through the massive scalar particle exchange is analyzed
numerically in the framework of the Bethe-Salpeter ladder model.
  As in the s-wave case, the eigenvalues of the coupling constant are found to
become complex for some mass configurations in some range of the bound state
mass. The Bethe-Salpeter amplitudes of the low-lying bound states are also
investigated.

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The categories of this paper are: ao-sci
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The categories of this paper are: eess
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The categories of this paper are: q-alg
1
The categories of this paper are: cs
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The categories of this paper are: q-fin
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The categories of this paper are: supr-con
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The categories of this paper are: stat
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The categories of this paper are: funct-an
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The categories of this paper are: cmp-lg
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The categories of this paper are: comp-gas
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The categories of this paper are: dg-ga
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The categories of this paper are: gr-qc
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The categories of this paper are: nlin
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The categories of this paper are: astro-ph
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The categories of this paper are: solv-int
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The categories of this paper are: econ