Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Exploring Confinement with Spin   A confining gauge theory violates the completeness of asymptotic states held
as foundation points of the $S$-matrix. Spin-dependent experiments can yield
results that appear to violate quantum mechanics. The point is illustrated by
violation of the Soffer bound in $QCD$. Experimental confirmation that the
bound is violated would be a discovery of immense importance, sweeping away
fundamental assumptions of strong interaction physics held for the past 50
years.

14
The categories of this paper are: math-ph
2
The categories of this paper are: math
19
The categories of this paper are: eess
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg
24
The categories of this paper are: dg-ga
35
The categories of this paper are: mtrl-th
37
The categories of this paper are: supr-con
30
The categories of this paper are: q-alg
4
The categories of this paper are: cond-mat
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin
26
The categories of this paper are: bayes-an
31
The categories of this paper are: ao-sci
22
The categories of this paper are: chao-dyn
29
The categories of this paper are: funct-an