Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Comment on Quantum Interference between Light Sources Separated by 150
  Million Kilometers Deng et al. PHYSICAL REVIEW LETTERS 123, 080401 (2019)   This is a comment on the paper : Quantum Interference between Light Sources
Separated by 150 Million Kilometers by Deng et al, PHYSICAL REVIEW LETTERS 123,
080401 (2019)

6
The categories of this paper are: astro-ph
9
The categories of this paper are: nlin
18
The categories of this paper are: econ
25
The categories of this paper are: patt-sol
5
The categories of this paper are: gr-qc
2
The categories of this paper are: math
26
The categories of this paper are: bayes-an
32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
3
The categories of this paper are: physics
21
The categories of this paper are: adap-org
17
The categories of this paper are: q-fin
29
The categories of this paper are: funct-an
27
The categories of this paper are: comp-gas
28
The categories of this paper are: alg-geom
4
The categories of this paper are: cond-mat