Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Instability of a four-dimensional de Sitter black hole with a
  conformally coupled scalar field   We study the stability of new neutral and electrically charged
four-dimensional black hole solutions of Einstein's equations with a positive
cosmological constant and conformally coupled scalar field. The neutral black
holes are always unstable. The charged black holes are also shown analytically
to be unstable for the vast majority of the parameter space of solutions, and
we argue using numerical techniques that the configurations corresponding to
the remainder of the parameter space are also unstable.

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The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th
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The categories of this paper are: eess
35
The categories of this paper are: mtrl-th
26
The categories of this paper are: bayes-an
24
The categories of this paper are: dg-ga
23
The categories of this paper are: solv-int
31
The categories of this paper are: ao-sci
30
The categories of this paper are: q-alg
0
The categories of this paper are: hep-ph
16
The categories of this paper are: stat
2
The categories of this paper are: math
37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
13
The categories of this paper are: quant-ph
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The categories of this paper are: adap-org