Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Electromagnetic vertex function of the pion at T > 0   The matrix element of the electromagnetic current between pion states is
calculated in quenched lattice QCD at a temperature of $T = 0.93 T_c$. The
nonperturbatively improved Sheikholeslami-Wohlert action is used together with
the corresponding ${\cal O}(a)$ improved vector current. The electromagnetic
vertex function is extracted for pion masses down to $360 {\rm MeV}$ and
momentum transfers $Q^2 \le 2.7 {\rm GeV}^2$.

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The categories of this paper are: chem-ph
4
The categories of this paper are: cond-mat
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The categories of this paper are: solv-int
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The categories of this paper are: bayes-an
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The categories of this paper are: cmp-lg
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The categories of this paper are: dg-ga
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The categories of this paper are: nucl-ex
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The categories of this paper are: patt-sol
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The categories of this paper are: quant-ph
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The categories of this paper are: hep-ex
1
The categories of this paper are: cs
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The categories of this paper are: chao-dyn
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The categories of this paper are: supr-con
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The categories of this paper are: nlin
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The categories of this paper are: q-alg
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The categories of this paper are: ao-sci