"Strongly Coupled QCD Matter" by Barbara Jacak (UC Berkeley and Lawrence Berkeley National Laboratory)

Thursday, January 10, 2019 - 3:30pm to 4:30pm
Physics and Astronomy Colloquium

Thursdays, 3:30-4:30 pm

1-434 Physics and Astronomy (map)
Reception from 3:30-4:30 p.m.
(unless otherwise posted)


Guest Speaker: Barbara Jacak (UC Berkeley and Lawrence Berkeley National Laboratory)

Talk Title:  “Strongly Coupled QCD Matter”


Quantum Chromodynamics predicts a transition from normal hadronic matter to a phase where the quarks and gluons are no longer bound together and can move freely. Quark gluon plasma is now produced regularly in collisions of heavy nuclei at very high energy at both the Relativistic Heavy Ion Collider (RHIC) in the U.S. and at the LHC in Europe.

Quark gluon plasma exhibits remarkable properties. Its vanishingly small shear viscosity to entropy density ratio means that it flows essentially without internal friction, making it one of the most “perfect” liquids known. It is also very opaque to transiting particles including heavy charm and bottom quarks. Determining the transport properties of quark gluon plasma is a key goal of current research, and will be described in this presentation. Recent data suggest that even very small colliding systems may produce a droplet of plasma. It remains a mystery how this plasma emerges from cold, dense gluonic matter deep inside nuclei within 1 fm/c. I will discuss how a future electron-ion collider can help address this question.


For more information, contact Yaroslav Tserkovnyak

We thank the following people for their contributions to the wine fund for the post-colloquium reception:
Professors Katsushi Arisaka, Andrea Ghez, Karoly Holczer, Huan Huang, HongWen Jiang, Per Kraus, Alexander Kusenko, Matthew Malkan, Mayank Mehta, Warren Mori, Ni Ni, Seth Putterman, Yaroslav Tserkovnyak, Vladimir Vassiliev, Shenshen Wang, and Nathan Whitehorn.




1-434 PAB