Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Time reversal-odd effects in QCD and beyond   In this paper we will describe a parallel between phenomenological and
symmetry-based descriptions of the process dependence of the time-reversal-odd
phenomena in QCD, such as the Sivers effect, with the goal of defining the
essential elements that lead to such process dependence in QCD. This will then
serve as a starting point to explore possible generalizations in a different
gauge theory.

11
The categories of this paper are: hep-lat
17
The categories of this paper are: q-fin
7
The categories of this paper are: hep-th
34
The categories of this paper are: chem-ph
22
The categories of this paper are: chao-dyn
2
The categories of this paper are: math
9
The categories of this paper are: nlin
37
The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex
1
The categories of this paper are: cs
18
The categories of this paper are: econ
13
The categories of this paper are: quant-ph
28
The categories of this paper are: alg-geom
14
The categories of this paper are: math-ph
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg