Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quasinormal modes for non-minimally coupled scalar fields in regular
  black hole spacetimes: Grey-body factors, Area spectrum and Shadow radius   Black hole perturbation theory is a useful approach to study interactions
between black holes and fundamental fields. A particular class of black hole
solutions arising out of modification of Einstein's general theory of
relativity are regular black holes (RBHs) which can be constructed using a
nonlinear electrodynamic Lagrangian. Because of their importance, we are
interested in studying the behavior of three kinds of such RBHs under
perturbations generated by an external field. Indeed, we investigate the
quasinormal modes (QNMs) of a massive scalar field propagating near the RBHs
which is non-minimally coupled to the Ricci scalar tensor of background
geometry. We will attempt to find the low-lying quasinormal frequencies of the
perturbations by using WKB approximation. We shall also study the relationship
between the QNMs and some characteristic properties of black holes such as
grey-body factors, area quantization, and shadow radius.

30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio
33
The categories of this paper are: plasm-ph
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The categories of this paper are: mtrl-th
29
The categories of this paper are: funct-an
4
The categories of this paper are: cond-mat
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The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin
18
The categories of this paper are: econ
0
The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci
13
The categories of this paper are: quant-ph
34
The categories of this paper are: chem-ph
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The categories of this paper are: cmp-lg
21
The categories of this paper are: adap-org