Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Pure spin-3/2 propagator for use in particle and nuclear physics   We propose the use of pure spin-3/2 propagator in the $(3/2,0) \oplus
(0,3/2)$ representation in particle and nuclear physics. To formulate the
propagator in a covariant form we use the antisymmetric tensor spinor
representation and we consider the $\Delta$ resonance contribution to the
elastic $\pi N$ scattering as an example. We find that the use of conventional
gauge invariant interaction Lagrangian leads to a problem; the obtained
scattering amplitude does not exhibit the resonance behavior. To overcome this
problem we modify the interaction by adding a momentum dependence. As in the
case of Rarita-Schwinger we find that a perfect resonance description could be
obtained in the pure spin-3/2 formulation only if hadronic form factors were
considered in the interactions.

11
The categories of this paper are: hep-lat
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The categories of this paper are: astro-ph
34
The categories of this paper are: chem-ph
19
The categories of this paper are: eess
25
The categories of this paper are: patt-sol
9
The categories of this paper are: nlin
20
The categories of this paper are: acc-phys
31
The categories of this paper are: ao-sci
15
The categories of this paper are: nucl-ex
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The categories of this paper are: alg-geom
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The categories of this paper are: gr-qc
23
The categories of this paper are: solv-int
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The categories of this paper are: cs
36
The categories of this paper are: cmp-lg
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The categories of this paper are: funct-an
2
The categories of this paper are: math