Physics Colloquium

"How perfect is the RHIC liquid?"

Presented by Jean-Yves Ollitrault, Centre National de la Recherche Scientifique (CNRS), France

Tuesday, February 24, 2009, 3:30 pm — Large Seminar Room, Bldg. 510

Ultrarelativistic heavy-ion collisions at RHIC have been claimed to create a perfect liquid of strongly interacting quarks and gluons: its vicosity of this liquid might as low as a universal lower bound, conjectured from black-hole physics and string theory. I argue that experimental data clearly show large "viscous" corrections to several observables, at least 30%. The resulting estimate of the viscosity of QCD is larger than the lower bound from black-hole physics.


Hosted by: Robert Pisarski

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