Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Topology change, emergent symmetries and compact star matter   Topology effects have being extensively studied and confirmed in strongly
correlated condensed matter physics. In the large color number limit of QCD,
baryons can be regarded as topological objects -- skyrmions -- and the baryonic
matter can be regarded as a skyrmion matter. We review in this paper the
generalized effective field theory for dense compact-star matter constructed
with the robust inputs obtained from the skyrmion approach to dense nuclear
matter, relying to possible ``emergent" scale and local flavor symmetries at
high density. All nuclear matter properties from the saturation density $n_0$
up to several times $n_0$ can be fairly well described. A uniquely novel -- and
unorthdox -- feature of this theory is the precocious appearance of the
pseudo-conformal sound velocity $v^2_{s}/c^2 \approx 1/3$, with the
non-vanishing trace of the energy momentum tensor of the system. The topology
change encoded in the density scaling of low energy constants is interpreted as
the quark-hadron continuity in the sense of Cheshire Cat Principle (CCP) at
density $\gsim 2n_0$ in accessing massive compact stars. We confront the
approach with the data from GW170817 and GW190425.

10
The categories of this paper are: q-bio
8
The categories of this paper are: hep-ex
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
21
The categories of this paper are: adap-org
34
The categories of this paper are: chem-ph
15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int
11
The categories of this paper are: hep-lat
26
The categories of this paper are: bayes-an
1
The categories of this paper are: cs
17
The categories of this paper are: q-fin