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PRODID:UW-Madison-Physics-Events
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SEQUENCE:0
UID:UW-Physics-Event-4213
DTSTART:20170407T203000Z
DURATION:PT1H0M0S
DTSTAMP:20260408T191714Z
LAST-MODIFIED:20170328T135735Z
LOCATION:2241 Chamberlin hall
SUMMARY:Quark Gluon Plasma: Surprises from strongly coupled QCD matter
 \, Physics Department Colloquium\, Barbara Jacak\, UC-Berkeley/LBL
DESCRIPTION:Quantum Chromodynamics has long predicted a transition fro
 m 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 a
 t both the Relativistic Heavy Ion Collider (RHIC) in the U.S. and at t
 he LHC in Europe. <br>
\n<br>
\nQuark gluon plasma exhibits remarkable
  properties. Its vanishingly small shear viscosity to entropy density 
 ratio means that it flows essentially without internal friction\, mak
 ing it one of the most “perfect” liquids known. It is also very op
 aque to transiting particles including heavy charm quarks\, though the
  exact mechanism for this is not yet understood. Recent data suggest t
 hat even very small colliding systems may produce a droplet of plasma.
  The similarities to strongly coupled or correlated systems in ultra-c
 old atoms and condensed matter are striking\, and have inspired novel 
 theoretical descriptions growing out of string theory. It remains a my
 stery how this plasma emerges from cold\, dense gluonic matter deep in
 side nuclei. I will discuss current knowledge about interactions of qu
 arks and gluons within the plasma and how a future electron-ion collid
 er can help address this question.<br>
\n
URL:https://www.physics.wisc.edu/events/?id=4213
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