Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Charged Einstein-\ae ther black holes in $n$-dimensional spacetime   In this work, we investigate the $n$-dimensional charged static black hole
solutions in the Einstein-\ae ther theory. By taking the metric parameter $k$
to be $1,0$, and $-1$, we obtain the spherical, planar, and hyperbolic
spacetimes respectively. Three choices of the cosmological constant,
$\Lambda>0$, $\Lambda=0$ and $\Lambda<0$, are investigated, which correspond to
asymptotically de Sitter, flat and anti-de Sitter spacetimes. The obtained
results show the existence of the universal horizon in higher dimensional cases
which may trap any particle with arbitrarily large velocity. We analyze the
horizon and the surface gravity of 4- and 5-dimensional black holes, and the
relations between the above quantities and the electrical charge. It is shown
that when the aether coefficient $c_{13}$ or the charge $Q$ increases, the
outer Killing horizon shrinks and approaches the universal horizon.
Furthermore, the surface gravity decreases and approaches zero in the limit
$c_{13}\rightarrow\infty$ or $Q\rightarrow Q_e$, where $Q_e$ is the extreme
charge. The main features of the horizon and surface gravity are found to be
similar to those in $n=3$ case, but subtle differences are also observed.

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The categories of this paper are: bayes-an
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The categories of this paper are: supr-con
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The categories of this paper are: patt-sol
3
The categories of this paper are: physics
0
The categories of this paper are: hep-ph
6
The categories of this paper are: astro-ph
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The categories of this paper are: funct-an
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The categories of this paper are: econ
2
The categories of this paper are: math
12
The categories of this paper are: nucl-th
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The categories of this paper are: eess
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The categories of this paper are: ao-sci
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The categories of this paper are: acc-phys
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The categories of this paper are: chem-ph
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The categories of this paper are: solv-int
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The categories of this paper are: math-ph