Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Proof of a Quantum Bousso Bound   We prove the generalized Covariant Entropy Bound, $\Delta S\leq
(A-A')/4G\hbar$, for light-sheets with initial area $A$ and final area $A'$.
The entropy $\Delta S$ is defined as a difference of von Neumann entropies of
an arbitrary state and the vacuum, with both states restricted to the
light-sheet under consideration. The proof applies to free fields, in the limit
where gravitational backreaction is small. We do not assume the null energy
condition. In regions where it is violated, we find that the bound is protected
by the defining property of light-sheets: that their null generators are
nowhere expanding.

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The categories of this paper are: quant-ph
32
The categories of this paper are: atom-ph
15
The categories of this paper are: nucl-ex
0
The categories of this paper are: hep-ph
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The categories of this paper are: chem-ph
33
The categories of this paper are: plasm-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: hep-ex
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The categories of this paper are: stat
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The categories of this paper are: hep-lat
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The categories of this paper are: astro-ph
1
The categories of this paper are: cs
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The categories of this paper are: math-ph
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The categories of this paper are: eess
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The categories of this paper are: solv-int
2
The categories of this paper are: math