Hydrodynamics and collective behaviour in relativistic nuclear collisions
نویسنده
چکیده
Hydrodynamics is applied to describe the dynamics of relativistic heavy-ion collisions. The focus of the present study is the influence of a possible (phase) transition to the quark–gluon plasma in the nuclear matter equation of state on collective observables, such as the lifetime of the system and the transverse directed flow of matter. It is shown that such a transition leads to a softening of the equation of state, and consequently to a time-delayed expansion which is in principle observable via two–particle correlation functions. Moreover, the delayed expansion leads to a local minimum in the excitation function of transverse directed flow around AGS energies.
منابع مشابه
- th / 9 60 80 24 v 1 1 3 A ug 1 99 6 1 Hydrodynamics and collective behaviour in relativistic nuclear collisions ∗
Hydrodynamics is applied to describe the dynamics of relativistic heavy-ion collisions. The focus of the present study is the influence of a possible (phase) transition to the quark–gluon plasma in the nuclear matter equation of state on collective observables, such as the lifetime of the system and the transverse directed flow of matter. It is shown that such a transition leads to a softening ...
متن کاملTransverse Shocks in the Turbulent Gluon Plasma Produced in Ultra-relativistic A+a
Mini-jet production in ultra-relativistic nuclear collisions leads to initial conditions characterized by large fluctuations of the local energy density (hot spots) and of the collective flow field (turbulence). Assuming that local equilibrium is reached on a small time scale, ∼ 0.5 fm/c, the transverse evolution of those initial conditions is computed using hydrodynamics. We find that a new cl...
متن کاملFluid Dynamics for Relativistic Nuclear Collisions
I give an introduction to the basic concepts of fluid dynamics as applied to the dynamical description of relativistic nuclear collisions.
متن کاملAnisotropic collective phenomena in ultra-relativistic nuclear collisions
For a detailed review of this subject I refer to a recent paper [1]; in this talk I only very briefly comment on a few most important questions: (a) Very recent significant progress in viscous hydrodynamics calculations (b) Initial eccentricity/flow fluctuations, the effect of which has been clarified recently (c) Initial conditions, in particular the role of the gradients in the initial veloci...
متن کاملRelativistic Hydrodynamics for Heavy–Ion Collisions II. Compression of Nuclear Matter and the Phase Transition to the Quark–Gluon Plasma†
We investigate the compression of nuclear matter in relativistic hydrodynamics. Nuclear matter is described by a σ − ω–type model for the hadron matter phase and by the MIT bag model for the quark–gluon plasma, with a first order phase transition between both phases. In the presence of phase transitions, hydrodynamical solutions change qualitatively, for instance, one-dimensional stationary com...
متن کامل