Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Blind spots of probing the high-density symmetry energy in heavy-ion
  collisions   The nuclear symmetry energy, especially at suprasaturation densities, plays
crucial roles in many astrophysical studies. However, nowadays the high-density
behavior of the symmetry energy is still very controversial in nuclear
community. To constrain the high-density behavior of the symmetry energy,
neutron-rich nuclei collisions at medium energies are considered to be one of
the most effective methods. While probing the high-density symmetry energy by
using heavy-ion collisions, blind spots may exist. In the framework of the
Isospin-dependent Boltzmann-Uehling-Uhlenbeck (IBUU) transport model, the blind
spots of probing the high-density symmetry energy by the n/p ratio in the
central Au+Au reaction at 300 MeV/nucleon are demonstrated. It is found that
the nucleon observable neutron to proton ratio n/p in heavy-ion collisions
cannot effectively probe the high-density symmetry energy when the high-density
symmetry energy is less density-dependent.

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The categories of this paper are: gr-qc
28
The categories of this paper are: alg-geom
34
The categories of this paper are: chem-ph
3
The categories of this paper are: physics
24
The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph
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The categories of this paper are: chao-dyn
30
The categories of this paper are: q-alg
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The categories of this paper are: hep-lat
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The categories of this paper are: econ
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The categories of this paper are: math
21
The categories of this paper are: adap-org
31
The categories of this paper are: ao-sci
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The categories of this paper are: q-bio
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The categories of this paper are: supr-con
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The categories of this paper are: acc-phys