Saturation of elliptic flow and shear viscosity

A. K. Chaudhuri

Saturation of elliptic flow and shear viscosity

Nuclear Theory 2007-10-08 v2

Authors: A. K. Chaudhuri

Abstract

Effect of shear viscosity on elliptic flow is studied in causal dissipative hydrodynamics in 2+1 dimensions. Elliptic flow is reduced in viscous dynamics. Causal evolution of minimally viscous fluid ( $\eta/s$ =0.08), can explain the PHENIX data on elliptic flow in 16-23% Au+Au collisions up to $p_T\approx$ 3.6 GeV. In contrast, ideal hydrodynamics, can explain the same data only up to $p_T\approx$ 1.5 GeV. $p_T$ spectra of identified particles are also better explained in minimally viscous fluid than in ideal dynamics. However, saturation of elliptic flow at large $p_T$ is not reproduced.

Keywords

elliptic flow fluid dynamics viscosity

Cite

@article{arxiv.0708.1252,
  title  = {Saturation of elliptic flow and shear viscosity},
  author = {A. K. Chaudhuri},
  journal= {arXiv preprint arXiv:0708.1252},
  year   = {2007}
}

Comments

In the revised version, viscous dynamics predictions for pT spectra of identified particles are shown. 4 pages, 2 figures

Saturation of elliptic flow and shear viscosity

Abstract

Keywords

Cite

Comments

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