Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Chiral symmetry and O(a) improvement in lattice QCD   The dominant cutoff effects in lattice QCD with Wilson quarks are
proportional to the lattice spacing a. In particular, the isovector axial
current satisfies the PCAC relation only up to such effects. Following a
suggestion of Symanzik, they can be cancelled by adding local O(a) correction
terms to the action and the axial current. We here address a number of
theoretical issues in connection with the O(a) improvement of lattice QCD and
then show that chiral symmetry can be used to fix the coefficients multiplying
the correction terms.

5
The categories of this paper are: gr-qc
25
The categories of this paper are: patt-sol
28
The categories of this paper are: alg-geom
17
The categories of this paper are: q-fin
3
The categories of this paper are: physics
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
10
The categories of this paper are: q-bio
23
The categories of this paper are: solv-int
2
The categories of this paper are: math
31
The categories of this paper are: ao-sci
21
The categories of this paper are: adap-org
27
The categories of this paper are: comp-gas
20
The categories of this paper are: acc-phys
9
The categories of this paper are: nlin
0
The categories of this paper are: hep-ph