Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Wald entropy formula and loop quantum gravity   We outline how the Wald entropy formula naturally arises in loop quantum
gravity based on recently introduced dimension-independent connection
variables. The key observation is that in a loop quantization of a generalized
gravity theory, the analog of the area operator turns out to measure, morally
speaking, the Wald entropy rather than the area. We discuss the explicit
example of (higher-dimensional) Lanczos-Lovelock gravity and comment on recent
work on finding the correct numerical prefactor of the entropy by comparing it
to a semiclassical effective action.

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The categories of this paper are: atom-ph
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The categories of this paper are: q-bio
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The categories of this paper are: cmp-lg
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The categories of this paper are: chao-dyn
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The categories of this paper are: nucl-th
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The categories of this paper are: quant-ph
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The categories of this paper are: eess
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The categories of this paper are: mtrl-th
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The categories of this paper are: acc-phys
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The categories of this paper are: patt-sol
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The categories of this paper are: hep-ph
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The categories of this paper are: cond-mat
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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: bayes-an
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The categories of this paper are: q-fin