Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Hydrodynamic and Transport Model for Ultrarelativistic Heavy Ion
  Collisions at RHIC and LHC Energies   Combining the hydrodynamic model (Hydro code) and the transport model (PACIAE
model), we present the Hydro-PACIAE hybrid model. We use the Hydro-PACIAE
hybrid model to calculate Au+Au collisions at $\sqrt{s_{NN}}$=130 GeV and Pb+Pb
collisions at $\sqrt{s_{NN}}$=2.76 TeV. The obtained pseudo-rapidity and
transverse momentum distributions well reproduce the experimental data. This
shows that the Hydro-PACIAE hybrid model is useful to describe the
ultrarelativistic Heavy Ion Collisions at RHIC and LHC Energies. We used the
hybrid model to calculate the elliptical flow for the Pb+Pb collisions at
$\sqrt{s_{NN}}$=2.76 TeV. The $v_2$ values are bigger than the experimental
data at high $p_T$, and will become bigger when the Hydro evolution time is
longer. The results indicate that the selection of the transition hypersurface
has significant effect on the observable quantities.

36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
28
The categories of this paper are: alg-geom
14
The categories of this paper are: math-ph
26
The categories of this paper are: bayes-an
24
The categories of this paper are: dg-ga
2
The categories of this paper are: math
6
The categories of this paper are: astro-ph
19
The categories of this paper are: eess
37
The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex
29
The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
35
The categories of this paper are: mtrl-th
20
The categories of this paper are: acc-phys
16
The categories of this paper are: stat