Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the "old" and "new" relativistic wave equations for the particle
  having spin s=3/2   Relativistic wave equation of motion without redundant components for the
particle having spin 3/2 has been considered. In order to show the newness a
comparison with the known equations for the spin s=3/2 field is given.
Therefore, the brief review of the relativistic wave equations for the particle
with spin s=3/2 is given. In our equation the wave function for the
particle-antiparticle doublet has only 8 components. The consideration is
carried out both at the level of relativistic quantum mechanics and at the
level of local field theory. The extended Foldy--Wouthuysen transformation,
which gives the operator link between these two levels is suggested.

27
The categories of this paper are: comp-gas
24
The categories of this paper are: dg-ga
18
The categories of this paper are: econ
20
The categories of this paper are: acc-phys
31
The categories of this paper are: ao-sci
8
The categories of this paper are: hep-ex
1
The categories of this paper are: cs
19
The categories of this paper are: eess
33
The categories of this paper are: plasm-ph
6
The categories of this paper are: astro-ph
4
The categories of this paper are: cond-mat
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
11
The categories of this paper are: hep-lat
25
The categories of this paper are: patt-sol
16
The categories of this paper are: stat