Topics on Hydrodynamic Model of Nucleus-Nucleus Collisions

  title={Topics on Hydrodynamic Model of Nucleus-Nucleus Collisions},
  author={Yogiro Hama and T Kodama and Ot{\'a}vio Socolowski},
  journal={Brazilian Journal of Physics},
A survey is given on the applications of hydrodynamic model of nucleus-nucleus collisons, focusing especially on i) the resolution of hydrodynamic equations for arbitrary configurations, by using the smoothed-particle hydrodynamic approach; ii) effects of the event-by-event fluctuation of the initial conditions on the observables; iii) decoupling criteria; iv) analytical solutions; and others. 
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Topology studies of hydrodynamics using two-particle correlation analysis.
Two-particle correlation analysis is applied to events generated with the NEXSPHERIO hydrodynamic code and shows that the nonsmoothness in the IC survives the hydroevolution and can be seen as topological features of the angular correlation function of the particles emerging from the evolving system.
Relativistic hydrodynamical model in the presence of long-range correlations
The effects of dynamical long-range correlations over a fluid cell-size scale on a relativistic fluid are discussed. It is shown that such correlations among the fluid elements introduced into the
Importance of granular structure in the initial conditions for the elliptic flow.
A granular structure of the initial conditions of a hydrodynamic description of high-energy nucleus-nucleus collisions enhances production of isotropically distributed high-pT particles and reduces v2 in the forward and backward regions where the global matter density is smaller and, therefore, where such effects become more efficacious.
Longitudinal fluid-dynamics for ultrarelativistic heavy-ion collisions
We develop a 1+1 dimensional hydrodynamical model for central heavy–ion collisions at ultrarelativistic energies. Deviations from Bjorken’s scaling are taken into account by implementing finite–size
On the peripheral tube description of the two-particle correlations in nuclear collisions
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Influence of the Equation of State on the Momentum Anisotropy in Hadrodynamic Evolution of Relativistic Heavy Ion Collisions
We investigate the collective momentum anisotropy in relativistic heavy ion collisions in the BNL-RHIC energy regime with a three-dimensional hydrodynamical simulation code (SPHERIO) for different


Incident-Energy Dependence of the Effective Temperature in Heavy-Ion Collisions
We study, in a hydrodynamical approach, the energy dependence of the kaon mT spectra in central Pb+Pb (Au+Au) collisions. We show that the experimental data of the inverse slope parameter can be
Particle emission in hydrodynamics: a problem needing a solution
A survey of various mechanisms for particle emission in hydrodynamics is presented. First, in the case of sudden freeze out, the problem of negative contributions in the Cooper-Frye formula and ways
Fluctuations of the initial conditions and the continuous emission in the hydrodynamical description of two-pion interferometry.
Comparison with data at the BNL Relativistic Heavy Ion Collider shows that, despite the rather rough approximation used here, this description can account for the m(T) dependence of R(L) and R(s), and produces a significant improvement for R(o) with respect to the usual version.
Bose-Einstein correlation of particles produced by expanding sources.
  • Hama, Padula
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    Physical review. D, Particles and fields
  • 1988
Landau's hydrodynamical model, wherein each space-time point of the fluid with temperature T = T/sub c/approx. =m/sub ..pi../ is taken as an independent and chaotic emitting center with a Planck spectral distribution, reproduces surprisingly well the observed ..pi..-..pi.. and K-K correlations at the CERN ISR.
New Algorithms for Ultra-relativistic Numerical Hydrodynamics
Two new transport algorithms for solving the one-dimensional relativistic hydrodynamic equations of motion are discussed. One of them, relativistic HLLE, is based on the HLLE upwind scheme, while the
Resolution of Hydrodynamical Equations for Transverse Expansions
The three-dimensional hydrodynamical expansion is treated with a method similar to that of Milekhin, but more explicit. Althouqh inthe final staqe we have to appeal to numerical calculation,the
Second-order dissipative fluid dynamics for ultrarelativistic nuclear collisions.
The Müller-Israel-Stewart second-order theory of relativistic imperfect fluids based on Grad's moment method is used to study the expansion of hot matter produced in ultrarelativistic heavy-ion
Mass Identified Particle Yields in Antiproton-Proton Collisions at √s = 1.8 TeV
In p-p collisions at √s = 1.8 TeV, the yields and the transverse momentum distributions of π±, K±, p± in the central region have been measured up to a charged particle pseudo rapidity density of
Introduction to Relativistic Gases
Some of the observed quantities in relativistic heavy-ion collisions, such as ratios of produced particles, transverse spectra, etc. [1], are often well described in terms of simple thermal models.
A Method for the Numerical Calculation of Hydrodynamic Shocks
The equations of hydrodynamics are modified by the inclusion of additional terms which greatly simplify the procedures needed for stepwise numerical solution of the equations in problems involving