Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Evolution of a Kerr-Newman black hole in a dark energy universe   This paper deals with the study of the accretion of dark energy with equation
of state $p=w\rho$ onto Kerr-Newman black holes. We have obtained that when
$w>-1$ the mass and specific angular momentum increase, and that whereas the
specific angular momentum increases up to a given plateau, the mass grows up
unboundedly. On the regime where the dominant energy condition is violated our
model predicts a steady decreasing of mass and angular momentum of black holes
as phantom energy is being accreted. Masses and and angular momenta of all
black holes tend to zero when one approaches the big rip. The results that
cosmic censorship is violated and that the black hole size increases beyond the
universe size itself are discussed in terms of considering the used models as
approximations to a more general descriptions where the metric is
time-dependent.

7
The categories of this paper are: hep-th
30
The categories of this paper are: q-alg
8
The categories of this paper are: hep-ex
25
The categories of this paper are: patt-sol
32
The categories of this paper are: atom-ph
14
The categories of this paper are: math-ph
9
The categories of this paper are: nlin
17
The categories of this paper are: q-fin
1
The categories of this paper are: cs
28
The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th
15
The categories of this paper are: nucl-ex
21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
37
The categories of this paper are: supr-con
18
The categories of this paper are: econ