Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the extraction of spectral quantities with open boundary conditions   We discuss methods to extract decay constants, meson masses and gluonic
observables in the presence of open boundary conditions. The ensembles have
been generated by the CLS effort and have 2+1 flavors of O(a)-improved Wilson
fermions with a small twisted-mass term as proposed by L\"uscher and Palombi.
We analyse the effect of the associated reweighting factors on the computation
of different observables.

28
The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th
6
The categories of this paper are: astro-ph
36
The categories of this paper are: cmp-lg
25
The categories of this paper are: patt-sol
5
The categories of this paper are: gr-qc
14
The categories of this paper are: math-ph
26
The categories of this paper are: bayes-an
31
The categories of this paper are: ao-sci
0
The categories of this paper are: hep-ph
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
21
The categories of this paper are: adap-org
32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn
4
The categories of this paper are: cond-mat