Importance of Granular Structure in the Initial Conditions for the Elliptic Flow

Andrade, Raquel Dully; Grassi, F.; Hama, Yogiro; Kodama, T.; Qian, Wei-Liang

doi:10.1103/physrevlett.101.112301

Cited by 102 publications

(109 citation statements)

References 27 publications

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“…NeXSPheRIO provides a good description of rapidity and transverse momentum spectra [43], elliptic flow v 2 [44], and the rapidity-even v 1 observable, directed flow at midrapidity [45]. In addition, it is known to reproduce the long-range structures observed in two-particle correlations [46].…”

Section: Resultsmentioning

confidence: 99%

Anisotropic Flow in Event-by-Event Ideal Hydrodynamic Simulations ofsNN=200 GeVAu
Gardim
¹
,
Grassi
²
,
Luzum
³

et al. 2012
Phys. Rev. Lett.

102

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We simulate top-energy Au+Au collisions using ideal hydrodynamics in order to make the first comparison to the complete set of mid-rapidity flow measurements made by the PHENIX Collaboration. A simultaneous calculation of v2, v3, v4, and the first event-by-event calculation of quadrangular flow defined with respect to the v2 event plane (v4{Ψ2}) gives good agreement with measured values, including the dependence on both transverse momentum and centrality. This provides confirmation that the collision system is indeed well described as a quark-gluon plasma with an extremely small viscosity, and that correlations are dominantly generated from collective effects. In addition we present a prediction for v5.

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Section: Resultsmentioning

confidence: 99%

Anisotropic Flow in Event-by-Event Ideal Hydrodynamic Simulations ofsNN=200 GeVAu
Gardim
¹
,
Grassi
²
,
Luzum
³

et al. 2012
Phys. Rev. Lett.

102

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“…Existing experimental data outside of the central rapidity region on particle multiplicity and elliptic flow show that at RHIC energies the Bjorken boost-invariance is not realized. Calculations exist for the general 3 + 1D geometry of the collision [14,27,28,31,36]. They show that relativistic hydrodynamics can be applied for a broad range of rapidities in central and semiperipheral collisions.…”

Section: Introductionmentioning

confidence: 99%

“…Relativistic hydrodynamics is very well suited for the description of the collective phase of the fireball expansion [14,16,25,26,27,28,29,30,31,32,33,34,35,36,37]. Assuming local thermal equilibration, perfect fluid hydrodynamics can be used.…”

Section: Introductionmentioning

confidence: 99%

Rapid hydrodynamic expansion in relativistic heavy-ion collisions

Božek

Wyskiel

2009

Phys. Rev. C

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Hydrodynamic expansion of the hot fireball created in relativistic Au-Au collisions at √ s = 200GeV in 3 + 1-dimensions is studied. We obtain a simultaneous, satisfactory description of the transverse momentum spectra, elliptic flow and pion correlation radii for different collision centralities and different rapidities. Early initial time of the evolution is required to reproduce the interferometry data, which provides a strong indication of the early onset of collectivity. We can also constraint the shape of the initial energy density in the beam direction, with a relatively high initial energy density at the center of the fireball.

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“…[48,51]). In addition, although we use a semirealistic initial condition (we use a Glauber smooth initial condition), a fluctuating, lumpy initial condition leads to lower elliptic flow along with other interesting effects [52][53][54] that certainly have an impact on the extraction of transport coefficients.…”

Section: Introductionmentioning

confidence: 99%

Dissipative hydrodynamics coupled to chiral fields

Peralta-Ramos

Krein

2011

Phys. Rev. C

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Using second-order dissipative hydrodynamics coupled self-consistently to the linear σ model we study the 2 + 1 dimensional evolution of the fireball created in Au+Au relativistic collisions. We analyze the influence of the dynamics of the chiral fields on the charged-hadron elliptic flow v 2 and on the ratio v 4 /(v 2 ) 2 for a temperature-independent as well as for a temperature-dependent viscosity-to-entropy ratio η/s calculated from the linearized Boltzmann equation in the relaxation time approximation. We find that v 2 is not very sensitive to the coupling of chiral sources to the hydrodynamic evolution, but the temperature dependence of η/s plays a much bigger role on this observable. On the other hand, the ratio v 4 /(v 2 ) 2 turns out to be much more sensitive than v 2 to both the coupling of the chiral sources and the temperature dependence of η/s.

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Importance of Granular Structure in the Initial Conditions for the Elliptic Flow

Cited by 102 publications

References 27 publications

Anisotropic Flow in Event-by-Event Ideal Hydrodynamic Simulations ofsNN=200 GeVAu
Gardim
¹
,
Grassi
²
,
Luzum
³

et al. 2012
Phys. Rev. Lett.

Anisotropic Flow in Event-by-Event Ideal Hydrodynamic Simulations ofsNN=200 GeVAu
Gardim
¹
,
Grassi
²
,
Luzum
³

et al. 2012
Phys. Rev. Lett.

Rapid hydrodynamic expansion in relativistic heavy-ion collisions

Dissipative hydrodynamics coupled to chiral fields

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Importance of Granular Structure in the Initial Conditions for the Elliptic Flow

Cited by 102 publications

References 27 publications

Anisotropic Flow in Event-by-Event Ideal Hydrodynamic Simulations ofsNN=200 GeVAuGardim1, Grassi2, Luzum3 et al. 2012Phys. Rev. Lett.

Anisotropic Flow in Event-by-Event Ideal Hydrodynamic Simulations ofsNN=200 GeVAuGardim1, Grassi2, Luzum3 et al. 2012Phys. Rev. Lett.

Rapid hydrodynamic expansion in relativistic heavy-ion collisions

Dissipative hydrodynamics coupled to chiral fields

Contact Info

Product

Resources

About

Anisotropic Flow in Event-by-Event Ideal Hydrodynamic Simulations ofsNN=200 GeVAu
Gardim
¹
,
Grassi
²
,
Luzum
³

et al. 2012
Phys. Rev. Lett.

Anisotropic Flow in Event-by-Event Ideal Hydrodynamic Simulations ofsNN=200 GeVAu
Gardim
¹
,
Grassi
²
,
Luzum
³

et al. 2012
Phys. Rev. Lett.