RELATIVISTIC FLUID-DYNAMICAL APPROACH FOR NUCLEAR COLLISIONS AT ENERGIES FROM 1 TO 100 GeV PER NUCLEON

Mishustin, I. N.; Russkikh, V. N.; Satarov, L. M.

doi:10.1142/9789814439411_0004

Cited by 20 publications

(47 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At the late stage of the expansion (t ∼ > 10 fm/c) the baryon-rich and baryon-free fluids become even spatially separated: The middle region of the system, containing no arrows, is solely populated by the baryon-free fluid, and hence the baryon-rich matter falls into two disconnected pieces. 4 In terms of Ref. [1] (ε frz [1] and ε code frz [1] ) our present quantities are ε frz = ε code frz [1] and ε out = ε frz [1] .…”

Section: D Simulationsmentioning

confidence: 96%

“…In addition, newly produced particles, populating the mid-rapidity region, are associated with a "fireball" (f) fluid. This model is a straightforward extension of the 2-fluid model with radiation of * e-mail: russ@ru.net † e-mail: Y.Ivanov@gsi.de direct pions [4,8,9] and (2+1)-fluid model [10,11,12]. In particular, the 3FD model allows a certain formation time for the fireball-fluid production, during which the matter of the fluid propagates without interactions.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Dynamical freeze-out in three-fluid hydrodynamics

Russkikh

Ivanov

2007

Phys. Rev. C

Self Cite

View full text Add to dashboard Cite

Freeze-out procedure accepted in the model of 3-fluid dynamics (3FD) [1] is analyzed. This procedure is formulated in terms of drain terms in hydrodynamic equations. Dynamics of the freeze-out is illustrated by 1-dimensional simulations. It is demonstrated that the resulting freezeout reveals a nontrivial dynamics depending on initial conditions in the expanding "fireball". The freeze-out front is not defined just "geometrically" on the condition of the freeze-out criterion met but rather is a subject the fluid evolution. It competes with the fluid flow and not always reaches the place where the freeze-out criterion is met. Dynamics of the freeze-out in 3D simulations is analyzed. It is demonstrated that the late stage of central nuclear collisions at top SPS energies is of the form of three (two baryon-rich and one baryon-free) fireballs separated from each other.

show abstract

Section: D Simulationsmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Dynamical freeze-out in three-fluid hydrodynamics

Russkikh

Ivanov

2007

Phys. Rev. C

Self Cite

View full text Add to dashboard Cite

show abstract

“…where should be less justified with raising bombarding energies (see a more detailed discussion in [57]). To estimate the importance of projectile-target transparency effects, we have This results in strong acceleration of fluid cells during the hadronization processes.…”

Section: B Simplified Picture Of Matter Evolution In a Central Boxmentioning

confidence: 99%

Hydrodynamic modeling of the deconfinement phase transition in heavy-ion collisions in the NICA–FAIR energy domain

2011

Self Cite

View full text Add to dashboard Cite

We use (3+1) dimensional ideal hydrodynamics to describe the space-time evolution of strongly interacting matter created in Au+Au and Pb+Pb collisions. The model is applied for the domain of bombarding energies 1-160 AGeV which includes future NICA and FAIR experiments. Two equations of state are used: the first one corresponding to resonance hadron gas and the second one including the deconfinement phase transition. The initial state is represented by two Lorentzboosted nuclei. Dynamical trajectories of matter in the central box of the system are analyzed.They can be well represented by a fast shock-wave compression followed by a relatively slow isentropic expansion. The parameters of collective flows and hadronic spectra are calculated under assumption of the isochronous freeze-out. It is shown that the deconfinement phase transition leads to broadening of proton rapidity distributions, increase of elliptic flows and formation of the directed antiflow in the central rapidity region. These effects are most pronounced at bombarding energies around 10 AGeV, when the system spends the longest time in the mixed phase. From the comparison with three-fluid calculations we conclude that the transparency effects are not so important in central collisions at NICA-FAIR energies (below 30 AGeV).

show abstract

“…Contrary to the conventional hydrodynamics, where local instantaneous stopping of projectile and target matter is assumed, a specific feature of the 3FD is a finite stopping power resulting in a counter-streaming regime of leading baryon-rich matter. The basic idea of a 3-fluid approximation to heavy-ion collisions [12][13][14] is that at each space-time point a generally nonequilibrium distribution of baryon-rich matter can be represented as a sum of two distinct contributions initially associated with constituent nucleons of the projectile (p) and target (t) nuclei. In addition, newly produced particles, populating the mid-rapidity region, are associated with a fireball (f) fluid.…”

Section: Introductionmentioning

confidence: 99%

Elliptic flow of protons and antiprotons in Au + Au collisions at sNN=7.7–62.4 GeV within alternative scenarios of three-fluid dynamics

Ivanov

2013

Physics Letters B

View full text Add to dashboard Cite

Analysis of elliptic flow of protons and antiprotons in Au+Au collisions is performed in a wide range of incident energies √ sNN = 7.7-62.4 GeV. Simulations has been done within the three-fluid model employing a purely hadronic equation of state (EoS) and two versions of the EoS involving deconfinement transition: an EoS with the first-order phase transition and that with a smooth crossover transition. It is found that the proton data are reproduced approximately to the same extent within all of the scenarios, including the hadronic one, while the deconfinement scenarios look certainly preferable for the antiproton elliptic flow. The fact that difference between elliptic flows of protons and antiprotons decreases with the incident energy rise is a consequence of reducing baryon stopping rather than an onset of deconfinement.

show abstract

RELATIVISTIC FLUID-DYNAMICAL APPROACH FOR NUCLEAR COLLISIONS AT ENERGIES FROM 1 TO 100 GeV PER NUCLEON

Cited by 20 publications

References 0 publications

Dynamical freeze-out in three-fluid hydrodynamics

Dynamical freeze-out in three-fluid hydrodynamics

Hydrodynamic modeling of the deconfinement phase transition in heavy-ion collisions in the NICA–FAIR energy domain

Elliptic flow of protons and antiprotons in Au + Au collisions at sNN=7.7–62.4 GeV within alternative scenarios of three-fluid dynamics

Contact Info

Product

Resources

About