Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Phase transitions of the BTZ black hole in new massive gravity   We investigate thermodynamics of the BTZ black hole in new massive gravity
explicitly. For $m^2\ell^2>1/2$ with $m^2$ the mass parameter of fourth-order
terms and $\ell^2$ AdS$_3$ curvature radius, the Hawking-Page phase transition
occurs between the BTZ black hole and AdS (thermal) soliton. For
$m^2\ell^2<1/2$, however, this transition unlikely occurs but a phase
transition between the BTZ black hole and the massless BTZ black hole is
possible to occur. We may call the latter as the inverse Hawking-Page phase
transition and this transition is favored in the new massive gravity.

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The categories of this paper are: atom-ph
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The categories of this paper are: astro-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: adap-org
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The categories of this paper are: acc-phys
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The categories of this paper are: physics
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The categories of this paper are: stat
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The categories of this paper are: hep-ex
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The categories of this paper are: econ
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The categories of this paper are: hep-lat
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The categories of this paper are: nlin
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The categories of this paper are: quant-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: supr-con
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The categories of this paper are: math-ph
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The categories of this paper are: q-alg