Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Studies Of The Over-Rotating BMPV Solution   We study unphysical features of the BMPV black hole and how each can be
resolved using the enhancon mechanism. We begin by reviewing how the enhancon
mechanism resolves a class of repulson singularities which arise in the BMPV
geometry when D--branes are wrapped on K3. In the process, we show that the
interior of an enhancon shell can be a time machine due to non-vanishing
rotation. We link the resolution of the time machine to the recently proposed
resolution of the BMPV naked singularity / "over-rotating" geometry through the
expansion of strings in the presence of RR flux. We extend the analysis to
include a general class of BMPV black hole configurations, showing that any
attempt to "over-rotate" a causally sound BMPV black hole will be thwarted by
the resolution mechanism. We study how it may be possible to lower the entropy
of a black hole due to the non-zero rotation. This process is prevented from
occurring through the creation of a family of resolving shells. The second law
of thermodynamics is thereby enforced in the rotating geometry - even when
there is no risk of creating a naked singularity or closed time-like curves.

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The categories of this paper are: nlin
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The categories of this paper are: gr-qc
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The categories of this paper are: q-fin
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The categories of this paper are: physics
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The categories of this paper are: hep-lat
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The categories of this paper are: cs
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The categories of this paper are: chem-ph
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The categories of this paper are: math-ph
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The categories of this paper are: econ
25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph
37
The categories of this paper are: supr-con
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The categories of this paper are: q-bio
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The categories of this paper are: hep-ex
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The categories of this paper are: eess
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The categories of this paper are: mtrl-th