Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Entangled phonons in atomic Bose-Einstein condensates   We theoretically study the entanglement between phonons spontaneously
generated in atomic Bose-Einstein condensates by analog Hawking and dynamical
Casimir processes. The quantum evolution of the system is numerically modeled
by a truncated Wigner method based on a full microscopic description of the
condensate and state non-separability is assessed by applying a generalized
Peres-Horodecki criterion. The peculiar distribution of entanglement is
described in both real and momentum spaces and its robustness against
increasing initial temperature is investigated. Viable strategies to
experimentally detect the predicted phonon entanglement are briefly discussed.

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The categories of this paper are: cmp-lg
17
The categories of this paper are: q-fin
23
The categories of this paper are: solv-int
21
The categories of this paper are: adap-org
15
The categories of this paper are: nucl-ex
24
The categories of this paper are: dg-ga
16
The categories of this paper are: stat
31
The categories of this paper are: ao-sci
7
The categories of this paper are: hep-th
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The categories of this paper are: funct-an
3
The categories of this paper are: physics
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The categories of this paper are: supr-con
0
The categories of this paper are: hep-ph
32
The categories of this paper are: atom-ph
10
The categories of this paper are: q-bio
18
The categories of this paper are: econ