Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Looking for (and not finding) a bulk brane   When does a holographic CFT with a boundary added to it (a BCFT) also have a
`good' holographic dual with a localized gravitating end-of-the-world brane? We
argue that the answer to this question is almost never. By studying Lorentzian
BCFT correlators, we characterize constraints imposed on a BCFT by the
existence of a bulk causal structure. We argue that approximate `bulk brane'
singularities place restrictive constraints on the spectrum of a BCFT that are
not expected to be true generically. We discuss how similar constraints implied
by bulk causality might apply in higher-dimensional holographic descriptions of
BCFTs involving a degenerating internal space. We suggest (although do not
prove) that even these higher-dimensional holographic duals are not generic.

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The categories of this paper are: cmp-lg
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The categories of this paper are: nlin
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The categories of this paper are: econ
2
The categories of this paper are: math
15
The categories of this paper are: nucl-ex
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The categories of this paper are: chao-dyn
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The categories of this paper are: solv-int
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The categories of this paper are: hep-ph
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The categories of this paper are: gr-qc
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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: cond-mat
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The categories of this paper are: patt-sol
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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: chem-ph