Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Holographic vector mesons in a dilaton background   Within a holographic framework, we consider vector mesons riding on a
gravity-dilaton background. The latter one is determined directly from a
Schr\"odinger equivalent potential which delivers a proper $\rho$ meson Regge
trajectory. The mapping on the dilaton potential yields a thermodynamic phase
structure with a first-order transition.

20
The categories of this paper are: acc-phys
28
The categories of this paper are: alg-geom
6
The categories of this paper are: astro-ph
34
The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con
27
The categories of this paper are: comp-gas
15
The categories of this paper are: nucl-ex
31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
13
The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th
5
The categories of this paper are: gr-qc
9
The categories of this paper are: nlin
8
The categories of this paper are: hep-ex
26
The categories of this paper are: bayes-an
16
The categories of this paper are: stat