Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Instability of Reissner-Nordstr\"{o}m black hole in
  Einstein-Maxwell-scalar theory   The scalarization of Reissner-Nordstr\"{o}m black holes was recently proposed
in the Einstein-Maxwell-scalar theory. Here, we show that the appearance of the
scalarized Reissner-Nordstr\"{o}m black hole is closely related to the
Gregory-Laflamme instability of the Reissner-Nordstr\"{o}m black hole without
scalar hair.

29
The categories of this paper are: funct-an
6
The categories of this paper are: astro-ph
23
The categories of this paper are: solv-int
26
The categories of this paper are: bayes-an
20
The categories of this paper are: acc-phys
27
The categories of this paper are: comp-gas
22
The categories of this paper are: chao-dyn
3
The categories of this paper are: physics
37
The categories of this paper are: supr-con
10
The categories of this paper are: q-bio
4
The categories of this paper are: cond-mat
34
The categories of this paper are: chem-ph
12
The categories of this paper are: nucl-th
24
The categories of this paper are: dg-ga
30
The categories of this paper are: q-alg
0
The categories of this paper are: hep-ph