Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Inside Anisotropic Black Hole with Vector Hair   We study the internal structure of anisotropic black holes with charged
vector hairs. Taking advantage of the scaling symmetries of the system, some
radially conserved charges are found via the extension of the Noether theorem.
Then, a general proof of no inner horizon of these black holes is presented and
the geometry ends at a spacelike singularity. Before reaching the singularity,
we find several intermediate regimes both analytically and numerically. In
addition to the Einstein-Rosen bridge contracting towards the singularity, the
instability triggered by the vector hair results in the oscillations of vector
condensate and the anisotropy of spatial geometry. Moreover, the latter
oscillates at twice the frequency of the condensate. Then, the geometry enters
into Kasner epochs with spatial anisotropy. Due to the effects from vector
condensate and U(1) gauge potential, there is generically a never-ending
alternation of Kasner epochs towards the singularity. The character of
evolution on approaching the singularity is found to be described by the Kasner
epoch alternation with flipping of powers of the Belinskii-Khalatnikov-Lifshitz
type.

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The categories of this paper are: cmp-lg
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The categories of this paper are: atom-ph
6
The categories of this paper are: astro-ph
9
The categories of this paper are: nlin
1
The categories of this paper are: cs
3
The categories of this paper are: physics
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The categories of this paper are: solv-int
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The categories of this paper are: mtrl-th
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The categories of this paper are: q-alg
4
The categories of this paper are: cond-mat
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The categories of this paper are: plasm-ph
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The categories of this paper are: chao-dyn
2
The categories of this paper are: math
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The categories of this paper are: bayes-an
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The categories of this paper are: nucl-th
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The categories of this paper are: funct-an