Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Local particle-ghost symmetry   We study the quantization of systems with local particle-ghost symmetries.
The systems contain ordinary particles including gauge bosons and their
counterparts obeying different statistics. The particle-ghost symmetry is a
kind of fermionic symmetry, different from the space-time supersymmetry and the
BRST symmetry. Subsidiary conditions on states guarantee the unitarity of
systems.

21
The categories of this paper are: adap-org
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
5
The categories of this paper are: gr-qc
14
The categories of this paper are: math-ph
3
The categories of this paper are: physics
23
The categories of this paper are: solv-int
31
The categories of this paper are: ao-sci
2
The categories of this paper are: math
32
The categories of this paper are: atom-ph
15
The categories of this paper are: nucl-ex
18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
13
The categories of this paper are: quant-ph
11
The categories of this paper are: hep-lat