Perfect fluidity of QGP at RHIC?
- Institute of Physics, University of Tokyo, Komaba, Tokyo 153-8902 (Japan)
We investigate, based on hydrodynamics, how robust the recent conclusion of discovery for perfect fluidity of the quark gluon plasma (QGP) at RHIC is. In hydrodynamic simulations, one needs to model (1) initial conditions (2) equations of state, and (3) decoupling/freezeout. The conclusion was obtained essentially based on a particular set of the above three models. So it is very important to check whether the conclusion remains valid even by changing model assumptions. We find that the color glass condensate (CGC), whose cases are growing in deep inelastic scattering at HERA, gives a larger eccentricity for produced gluon distributions and in turn leads to a larger momentum anisotropy than the conventional Glauber model does. Whether the perfect fluid QGP is discovered depends strongly on the modeling of initial states in relativistic heavy ion collisions.
- OSTI ID:
- 20891749
- Journal Information:
- AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 865; ISSN APCPCS; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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