Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Neutron star versus heavy-ion data: is the nuclear equation of state
  hard or soft?   Recent astrophysical observations of neutron stars and heavy-ion data are
confronted with our present understanding of the equation of state of dense
hadronic matter. Emphasis is put on the possible role of the presence of
hyperons in the interior of compact stars. We argue that data from low-mass
pulsars provide an important cross-check between high-density astrophysics and
heavy-ion physics.

17
The categories of this paper are: q-fin
30
The categories of this paper are: q-alg
16
The categories of this paper are: stat
27
The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
11
The categories of this paper are: hep-lat
18
The categories of this paper are: econ
34
The categories of this paper are: chem-ph
32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin
5
The categories of this paper are: gr-qc
28
The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th
23
The categories of this paper are: solv-int