Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: In the debris of hadron interactions lies the beauty of QCD (part II)   Recent progress in understanding the strong physics regime of QCD is
described. The role played by condensates, particularly $<q{\bar q} >$, in
breaking chiral symmetry and generating constituent masses for $u$ and $d$
quarks is reviewed. The influence this has on hadrons with vacuum quantum
numbers is emphasised. What we know of this sector from recent experiments on
$\phi$-radiative decays and from $D$ decays to light hadrons is discussed. How
we may gain a more complete understanding of this vacuum sector is outlined.

17
The categories of this paper are: q-fin
9
The categories of this paper are: nlin
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex
4
The categories of this paper are: cond-mat
28
The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
6
The categories of this paper are: astro-ph
37
The categories of this paper are: supr-con
25
The categories of this paper are: patt-sol
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
19
The categories of this paper are: eess
14
The categories of this paper are: math-ph
13
The categories of this paper are: quant-ph