Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Yukawa Couplings for the Spinning Particle and the World Line Formalism   We construct the world-line action for a Dirac particle coupled to a
classical scalar or pseudo-scalar background field. This action can be used to
compute loop diagrams and the effective action in the Yukawa model using the
world-line path-integral formalism for spinning particles.

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The categories of this paper are: nlin
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The categories of this paper are: hep-lat
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The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
1
The categories of this paper are: cs
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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: stat
2
The categories of this paper are: math
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The categories of this paper are: comp-gas
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The categories of this paper are: bayes-an
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The categories of this paper are: q-fin
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The categories of this paper are: math-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: chem-ph
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The categories of this paper are: physics