Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Colour Fields Computed in SU(3) Lattice QCD for the Static Tetraquark
  System   The colour fields created by the static tetraquark system are computed in
quenched SU(3) lattice QCD, in a 24^3 x 48 lattice at beta=6.2 corresponding to
a lattice spacing a=0.07261(85) fm. We find that the tetraquark colour fields
are well described by a double-Y, or butterfly, shaped flux tube. The two flux
tube junction points are compatible with Fermat points minimizing the total
flux tube length. We also compare the diquark-diantiquark central flux tube
profile in the tetraquark with the quark-antiquark fundamental flux tube
profile in the meson, and they match, thus showing that the tetraquark flux
tubes are composed of fundamental flux tubes.

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The categories of this paper are: astro-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: adap-org
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The categories of this paper are: stat
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The categories of this paper are: alg-geom
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The categories of this paper are: cond-mat
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The categories of this paper are: q-fin
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The categories of this paper are: cmp-lg
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The categories of this paper are: funct-an
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The categories of this paper are: chao-dyn
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The categories of this paper are: cs
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The categories of this paper are: math
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The categories of this paper are: mtrl-th
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The categories of this paper are: eess
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The categories of this paper are: solv-int
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The categories of this paper are: bayes-an