Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Bose-Einstein condensates in neutron stars   In the two decades since the appearance of the book "Bose-Einstein
Condensation" in 1995, there have been a number of developments in our
understanding of dense matter. After a brief overview of neutron star structure
and the Bose-Einstein condensed phases that have been proposed, we describe
selected topics, including neutron and proton pairing gaps, the physics of the
inner crust of neutron stars, where a neutron fluid penetrates a lattice of
nuclei, meson condensates, and pairing in dense quark matter. Especial emphasis
is placed on basic physical effects and on connections to the physics of cold
atomic gases.

18
The categories of this paper are: econ
25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics
26
The categories of this paper are: bayes-an
23
The categories of this paper are: solv-int
19
The categories of this paper are: eess
20
The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
36
The categories of this paper are: cmp-lg
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The categories of this paper are: q-fin
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The categories of this paper are: chao-dyn
5
The categories of this paper are: gr-qc
33
The categories of this paper are: plasm-ph
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The categories of this paper are: nucl-ex
2
The categories of this paper are: math
35
The categories of this paper are: mtrl-th