Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Near-Horizon Conformal Symmetry and Black Hole Entropy   Near an event horizon, the action of general relativity acquires a new
asymptotic conformal symmetry. Using two-dimensional dilaton gravity as a test
case, I show that this symmetry results in a chiral Virasoro algebra with a
calculable classical central charge, and that Cardy's formula for the density
of states reproduces the Bekenstein-Hawking entropy. This result lends support
to the notion that the universal nature of black hole entropy is controlled by
conformal symmetry near the horizon.

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The categories of this paper are: nucl-th
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The categories of this paper are: nlin
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The categories of this paper are: bayes-an
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The categories of this paper are: acc-phys
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The categories of this paper are: econ
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The categories of this paper are: stat
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The categories of this paper are: q-fin
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The categories of this paper are: alg-geom
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The categories of this paper are: chao-dyn
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The categories of this paper are: cmp-lg
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The categories of this paper are: astro-ph
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The categories of this paper are: chem-ph
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The categories of this paper are: cs
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The categories of this paper are: eess
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The categories of this paper are: physics
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The categories of this paper are: math