Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Glueballs at Physical Pion Mass   We study glueballs on two $N_f=2+1$ RBC/UKQCD gauge ensembles with physical
quark masses at two lattice spacings. The statistical uncertainties of the
glueball correlation functions are considerably reduced through the cluster
decomposition error reduction (CDER) method. The Bethe-Salpeter wave functions
are obtained for the scalar, tensor and pseudoscalar glueballs by using
spatially extended glueball operators defined through the gauge potential
$A_\mu(x)$ in the Coulomb gauge. These wave functions show similar features of
non-relativistic two-gluon systems, and they are used to optimize the signals
of the related correlation functions at the early time regions. Consequently,
the ground state masses can be extracted precisely. To the extent that the
excited state contamination is not important, our calculation gives glueball
masses at the physical pion mass for the first time.

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The categories of this paper are: q-fin
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The categories of this paper are: eess
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The categories of this paper are: nlin
10
The categories of this paper are: q-bio
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The categories of this paper are: hep-th
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The categories of this paper are: adap-org
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The categories of this paper are: cmp-lg
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The categories of this paper are: mtrl-th
6
The categories of this paper are: astro-ph
32
The categories of this paper are: atom-ph
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The categories of this paper are: stat
30
The categories of this paper are: q-alg
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The categories of this paper are: hep-ex
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The categories of this paper are: chao-dyn
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The categories of this paper are: cond-mat
18
The categories of this paper are: econ