Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: QCD$_4$ Glueball Masses from AdS-6 Black Hole Description   By using the generalized version of gauge/gravity correspondence, we study
the mass spectra of several typical QCD$_4$ glueballs in the framework of
AdS$_6$ black hole metric of Einstein gravity theory. The obtained glueball
mass spectra are numerically in agreement with those from the AdS$7 \times S^4$
black hole metric of the 11-dimensional supergravity.

13
The categories of this paper are: quant-ph
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The categories of this paper are: hep-lat
5
The categories of this paper are: gr-qc
37
The categories of this paper are: supr-con
29
The categories of this paper are: funct-an
10
The categories of this paper are: q-bio
24
The categories of this paper are: dg-ga
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The categories of this paper are: eess
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The categories of this paper are: nucl-ex
3
The categories of this paper are: physics
8
The categories of this paper are: hep-ex
0
The categories of this paper are: hep-ph
32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn
26
The categories of this paper are: bayes-an
31
The categories of this paper are: ao-sci