Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quasinormal modes of a charged spherical black hole with scalar hair for
  scalar and Dirac perturbations   The quasinormal modes of charged and uncharged massive scalar fields and also
of charged Dirac fields against the background of a charged spherical black
hole endowed with a scalar hair have been investigated. Special emphasis has
been given to the case where negative scalar charge dominates over the electric
charge of the black hole which mimics an Einstein-Rosen bridge. Except for the
complete monotonic behaviour of the damping (imaginary part of the quasinormal
mode) against the charge of the black hole as opposed to the existence of a
peak for the pure RN case, the qualitative behaviour does not appreciably
change due to the presence of scalar hair.

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The categories of this paper are: hep-ex
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The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph
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The categories of this paper are: econ
4
The categories of this paper are: cond-mat
12
The categories of this paper are: nucl-th
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The categories of this paper are: comp-gas
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The categories of this paper are: nucl-ex
32
The categories of this paper are: atom-ph
19
The categories of this paper are: eess
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The categories of this paper are: stat
35
The categories of this paper are: mtrl-th
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The categories of this paper are: nlin
34
The categories of this paper are: chem-ph
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The categories of this paper are: funct-an
10
The categories of this paper are: q-bio