Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Gravitation and vacuum entanglement entropy   The vacuum of quantum fields contains correlated fluctuations. When
restricted to one side of a surface these have a huge entropy of entanglement
that scales with the surface area. If UV physics renders this entropy finite,
then a thermodynamic argument implies the existence of gravity. That is, the
causal structure of spacetime must be dynamical and governed by the Einstein
equation with Newton's constant inversely proportional to the entropy density.
Conversely, the existence of gravity makes the entanglement entropy finite.
This thermodynamic reasoning is powerful despite the lack of a detailed
description of the dynamics at the cutoff scale, but it has its limitations. In
particular, we should not expect to understand corrections to Einstein gravity
in this way.

26
The categories of this paper are: bayes-an
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas
13
The categories of this paper are: quant-ph
21
The categories of this paper are: adap-org
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
9
The categories of this paper are: nlin
19
The categories of this paper are: eess
2
The categories of this paper are: math
4
The categories of this paper are: cond-mat
32
The categories of this paper are: atom-ph
14
The categories of this paper are: math-ph
37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
15
The categories of this paper are: nucl-ex