Physics PAN Seminar by Prof. Rainer J Fries (Texas A&M University)

Warning Icon This event is in the past.

Date: February 5, 2021
Time: 3:30 p.m. - 4:30 p.m.
Location: ZOOM
Category: Seminar

Physics PAN Seminar by Prof. Rainer J Fries (Texas A&M University)

Title: Constraining the Effective Shear Viscosity of Hot Hadron Matter


Transport properties of exotic QCD matter have received much attention since it was discovered that very low shear viscosity-over-entropy ratios eta/s are realized in quark gluon plasma just above the pseudo-critical temperature Tc that separates this phase from hot hadron matter. Both theoretical calculations and estimates from data collected in high-energy nuclear collisions have indicated values of eta/s close to the conjectured lower bound, implying that quark gluon plasma is an almost perfect liquid. Moving our attention below Tc, the transport properties of hot hadron matter are less clear. Theoretical predictions differ by an order of magnitude. We argue that constraints on hadronic eta/s can be derived from the same high-energy nuclear data sets, if the deviations of final freeze-out particle distributions from thermal equilibrium are analyzed. In this talk we describe our method, our attempts to quantify uncertainties, our final results, and the remaining open questions.

Join Zoom Meeting

Meeting ID: 545 664 8463
Passcode: 810058
One tap mobile
+13017158592,,5456648463#,,,,,,0#,,810058# US (Washington D.C)
+13126266799,,5456648463#,,,,,,0#,,810058# US (Chicago)

Dial by your location
        +1 301 715 8592 US (Washington D.C)
        +1 312 626 6799 US (Chicago)
        +1 646 876 9923 US (New York)
        +1 346 248 7799 US (Houston)
        +1 408 638 0968 US (San Jose)
        +1 669 900 6833 US (San Jose)
Meeting ID: 545 664 8463
Passcode: 810058
Find your local number:

February 2021