Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nonperturbatively-renormalized glue momentum fraction at physical pion
  mass from Lattice QCD   We present the first nonperturbatively-renormalized determination of the glue
momentum fraction $\langle x \rangle_g$ in the nucleon, based on lattice-QCD
simulations at physical pion mass using the cluster-decomposition error
reduction (CDER) technique. We provide the first practical strategy to
renormalize the glue energy-momentum tensor (EMT) nonperturbatively in the
RI/MOM scheme, and convert the results to the $\overline{\textrm{MS}}$ scheme
with 1-loop matching. The simulation results show that the CDER technique can
reduce the statistical uncertainty of its renormalization constant by a factor
of ${\cal O}$(300) in calculations using typical state-of-the-art lattice
volume, and the nonperturbatively-renormalized $\langle x \rangle_g$ is shown
to be independent of the lattice definitions of the glue EMT up to
discretization errors. We determine the renormalized $\langle x
\rangle_g^{\overline{\textrm{MS}}}(2\textrm{ GeV})$ to be 0.47(4)(11) at
physical pion mass, which is consistent with the experimentally-determined
value.

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The categories of this paper are: comp-gas
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The categories of this paper are: math-ph
3
The categories of this paper are: physics
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The categories of this paper are: acc-phys
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The categories of this paper are: atom-ph
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The categories of this paper are: q-fin
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The categories of this paper are: econ
5
The categories of this paper are: gr-qc
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The categories of this paper are: stat
10
The categories of this paper are: q-bio
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The categories of this paper are: chao-dyn
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The categories of this paper are: mtrl-th
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The categories of this paper are: chem-ph
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The categories of this paper are: adap-org
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The categories of this paper are: patt-sol
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The categories of this paper are: ao-sci