Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Glueball correlators as holograms   We investigate the dynamical content of both hard- and soft-wall
approximations to holographic QCD by deriving the corresponding glueball
correlation functions and by confronting them with a variety of QCD results. We
further calculate the glueball decay constants in both holographic duals,
discuss emerging limitations and improvement strategies, and comment on a
recent attempt to generalize the glueball correlator in the soft-wall
background.

30
The categories of this paper are: q-alg
5
The categories of this paper are: gr-qc
9
The categories of this paper are: nlin
14
The categories of this paper are: math-ph
8
The categories of this paper are: hep-ex
4
The categories of this paper are: cond-mat
19
The categories of this paper are: eess
25
The categories of this paper are: patt-sol
31
The categories of this paper are: ao-sci
17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex
1
The categories of this paper are: cs
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The categories of this paper are: bayes-an
10
The categories of this paper are: q-bio
18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th