The "Perfect" Fluid Quenches Jets Almost Perfectly
arXiv:0811.2979 · doi:10.1016/j.ppnp.2008.12.028
Abstract
The QCD matter produced in nuclear collisions at the Relativistic Heavy Ion Collider (RHIC) has been found to have a very low shear viscosity, which is close to the lower bound allowed by unitarity. The matter has also been found to strongly suppress the emission of energetic hadrons. This phenomenon, called "jet quenching" is interpreted to be the result of a large energy loss by the precursor parton on its path through the dense matter, primarily due to gluon radiation. I discuss how the two phenomena are related. The RHIC data suggest, in some scenarios of jet quenching, that the quark-gluon plasma created in nuclear collisions is characterized by strong coupling, but still admits a quasi-particle description.
Lecture given at the International School of Nuclear Physics in Erice, Sicily
References in corpus (9)
- Viscosity in Strongly Interacting Quantum Field Theories from Black Hole Physics
- Conformal Relativistic Viscous Hydrodynamics: Applications to RHIC results at sqrt(s_NN) = 200 GeV
- Causal viscous hydrodynamics in 2+1 dimensions for relativistic heavy-ion collisions
- A calculation of the bulk viscosity in SU(3) gluodynamics
- Radiative and Collisional Jet Energy Loss in the Quark-Gluon Plasma at RHIC
- Statistical hadronization of heavy quarks in ultra-relativistic nucleus-nucleus collisions
- Anomalous Viscosity of an Expanding Quark-Gluon Plasma
- Small Shear Viscosity of a Quark-Gluon Plasma Implies Strong Jet Quenching
- Phase Transitions and the Perfectness of Fluids