Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Universal signature of quantum entanglement across cosmological
  distances   Although the paradigm of inflation has been extensively studied to
demonstrate how macroscopic inhomogeneities in our universe originate from
quantum fluctuations, most of the established literature ignores the crucial
role that entanglement between the modes of the fluctuating field plays in its
observable predictions. In this paper, we import techniques from quantum
information theory to reveal hitherto undiscovered predictions for inflation
which, in turn, signals how quantum entanglement across cosmological scales can
affect large scale structure. Our key insight is that observable
long-wavelength modes must be part of an open quantum system, so that the
quantum fluctuations can decohere in the presence of an environment of
short-wavelength modes. By assuming the simplest model of single-field
inflation, and considering the leading order interaction term from the
gravitational action, we derive a universal lower bound on the observable
effect of such inescapable entanglement.

29
The categories of this paper are: funct-an
15
The categories of this paper are: nucl-ex
19
The categories of this paper are: eess
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
17
The categories of this paper are: q-fin
0
The categories of this paper are: hep-ph
34
The categories of this paper are: chem-ph
9
The categories of this paper are: nlin
25
The categories of this paper are: patt-sol
2
The categories of this paper are: math
27
The categories of this paper are: comp-gas
21
The categories of this paper are: adap-org
13
The categories of this paper are: quant-ph
12
The categories of this paper are: nucl-th
35
The categories of this paper are: mtrl-th