Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: 3+1 dimensional viscous hydrodynamics at high baryon densities   We apply a 3+1D viscous hydrodynamic + cascade model to the heavy ion
collision reactions with $\sqrt{s_{NN}}=6.3\dots39$ GeV. To accommodate the
model for a given collision energy range, the initial conditions for
hydrodynamic phase are taken from UrQMD, and the equation of state at finite
baryon density is based on Chiral model coupled to the Polyakov loop.
  We study the collision energy dependence of pion and kaon rapidity
distributions and $m_T$-spectra, as well as charged hadron elliptic flow and
how shear viscosity affects them. The model calculations are compared to the
data for Pb-Pb collisions at CERN SPS, as well as for Au-Au collisions in the
Beam Energy Scan (BES) program energies at BNL RHIC. The data favours the value
of shear viscosity $\eta/s\gtrsim0.2$ for this collision energy range.

20
The categories of this paper are: acc-phys
34
The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th
32
The categories of this paper are: atom-ph
25
The categories of this paper are: patt-sol
15
The categories of this paper are: nucl-ex
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
36
The categories of this paper are: cmp-lg
8
The categories of this paper are: hep-ex
21
The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an
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The categories of this paper are: eess
13
The categories of this paper are: quant-ph
27
The categories of this paper are: comp-gas
18
The categories of this paper are: econ