Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dirac and Majorana field operators with self/antiself charge-conjugate
  states   We discuss relations between Dirac and Majorana-like field operators with
self/antiself charge-conjugate states. The connections with recent models of
several authors were found. KEYWORDS: Dirac; field operators; Majorana; Neutral
particles; QFT.

33
The categories of this paper are: plasm-ph
7
The categories of this paper are: hep-th
8
The categories of this paper are: hep-ex
6
The categories of this paper are: astro-ph
27
The categories of this paper are: comp-gas
11
The categories of this paper are: hep-lat
19
The categories of this paper are: eess
34
The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con
4
The categories of this paper are: cond-mat
17
The categories of this paper are: q-fin
21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom
15
The categories of this paper are: nucl-ex
20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio