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[Balog Janos <balog.janos AT wigner.mta.hu>]

MTA Wigner FK RMI Elméleti Osztály Szemináriuma
Tisztelettel meghívjuk



                         Gyulassy Miklós
                      (Columbia University)

      "The Strongly Coupled Quark-Gluon-Magnetic Monopole Plasma"


               címmel tartandó szemináriumára.


Kivonat:

Experiments with high energy heavy ion reaction at the BNL RHIC and the 
CERN LHC accelerators discovered two distinct properties of deconfined 
Quark Gluon Plasmas (QGP) produced
in collisions with center of mass energies 200-2760 Age. One is “Perfect 
Fluidity” of the QGP characterized by large azimuthal harmonic 
fluctuations that requires small viscosity to entropy ration of the QGP 
state of matter (eta/s ~ 0.1-0.2) close to the quantum lower bound of 
strongly coupled systems.
The second property jet quenchi deduced from collective flow harmonics. 
ng is the very opacity of QGP matter to energetic high transverse 
momentum jets. Jet quenching has been well predicted by our all orders 
in opacity theory developed by Djordjevic, Gyulassy, Levai, Vitev (DGLV) 
based perturbative QCD techniques. The jet transport property “qhat” is 
the average square transverse momentum broadening per mean free path.
 Both properties are expected to be related inversely (eta/s ~ 
T^3/qhat). However, the qhat from our DGLV theory fit to RHIC and LHC 
data was found to be incompatible with eta/s when extrapolated down to 
pT<2 GeV. We recently propose a new theory adding nonperturbative 
magnetic monopole component to the QGP, as suggested by Liao-Shuryak.
Our extended new  sQGMP theory [1] account well for the first time both 
(pT<2) eta/s ~ 0.1 as well as jet (pT>10 GeV) qhat properties of 
semi-quark-gluon-magnetic monopole plasma.

[1]  Anisotropic Jet Quenching in semi-Quark-Gluon Plasmas with Magnetic 
Monopoles in Ultrarelativistic Heavy Ion Collisions, Jiechen Xu, Jinfeng 
Liao, Miklos Gyulassy
e-Print: arXiv:1411.3673 [hep-ph]

Helye: MTA Wigner FK RMI III.ép. Tanácsterem
Ideje: 2015. március 13. péntek du. 14:00 óra


Szívesen látunk minden érdeklődőt.

                                            Balog János