Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: D0-D4 system and QCD_{3+1}   We consider a $(3+1)$-dimensional QCD model using a dual supergravity
description with a non-extremal $D0$-$D4$ brane background. We calculate the
spectrum of glueball masses and Wilson loops in the background. The mass
spectrum is shown to coincide with one in non-extremal $D4$-brane systems, and
an area low of spatial Wilson loops is established. We show that there is a
region that Kaluza-Klein modes of the Euclidean time direction are decoupled
without decoupling glueball masses.

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The categories of this paper are: q-fin
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The categories of this paper are: adap-org
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The categories of this paper are: nucl-th
1
The categories of this paper are: cs
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The categories of this paper are: chem-ph
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The categories of this paper are: math-ph
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The categories of this paper are: chao-dyn
10
The categories of this paper are: q-bio
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The categories of this paper are: nlin
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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: bayes-an
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The categories of this paper are: eess
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The categories of this paper are: econ
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The categories of this paper are: ao-sci
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The categories of this paper are: cmp-lg