Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quark spectra, topology and random matrix theory   Quark spectra in QCD are linked to fundamental properties of the theory
including the identification of pions as the Goldstone bosons of spontaneously
broken chiral symmetry. The lattice Overlap-Dirac operator provides a
nonperturbative, ultraviolet-regularized description of quarks with the correct
chiral symmetry. Properties of the spectrum of this operator and their relation
to random matrix theory are studied here. In particular, the predictions from
chiral random matrix theory in topologically non-trivial gauge field sectors
are tested for the first time.

23
The categories of this paper are: solv-int
27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics
4
The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci
24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
32
The categories of this paper are: atom-ph
14
The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg
34
The categories of this paper are: chem-ph
29
The categories of this paper are: funct-an
20
The categories of this paper are: acc-phys
25
The categories of this paper are: patt-sol
22
The categories of this paper are: chao-dyn
33
The categories of this paper are: plasm-ph