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9th Workshop of the APS Topical Group on Hadronic Physics

Apr 13 – 16, 2021
US/Eastern timezone

Session

Non-equilibrium dynamics of the QGP

Apr 16, 2021, 1:30 PM

Conveners

Non-equilibrium dynamics of the QGP

  • Michael Strickland (Kent State University)

Description

co-host: Michael Strickland

Presentation materials

There are no materials yet.

  1. 201. Non-equilibrium attractor in high-temperature QCD plasmas
    Dekrayat Almaalol (Kent State University)
    4/16/21, 1:30 PM
    Oral Presentation

    We establish the existence of a far-from-equilibrium attractor in weakly-coupled gauge theory undergoing one-dimensional Bjorken expansion. We demonstrate that the resulting far-from-equilibrium evolution is insensitive to certain features of the initial condition, including both the initial momentum-space anisotropy and initial occupancy. We find that this insensitivity extends beyond the...

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  2. 233. Attractor in pre-equilibrium quark-gluon plasma and initial distribution
    Xiaojian Du (Bielefeld University)
    4/16/21, 1:50 PM
    Oral Presentation

    The equilibration and hydrodynamization of pre-equilibrium quark-gluon plasma in ultrarelativistic heavy-ion collisions are of interest. We established a numerical implementation of the QCD effective kinetic theory based on Arnold, Moore, Yaffe framework at leading order, including both gluon and light quark/antiquark degrees of freedom. A universal hydrodynamic attractor is present even at...

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  3. 221. Collective flow in single hit QCD kinetic theory
    Robin Törnkvist (Lund University)
    4/16/21, 2:10 PM
    Oral Presentation

    Motivated by recent interest in collectivity in small systems, we calculate harmonic flow response to initial geometry deformations within weakly coupled QCD kinetic theory using the first correction to the free-streaming background. We derive a parametric scaling formula that relates hadronic flow in systems of different sizes and different generic initial gluon distributions. We comment on...

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  4. 226. Nonperturbative excitations in overoccupied gluon plasmas
    Kirill Boguslavski (TU Wien, Austria)
    4/16/21, 2:30 PM
    Oral Presentation

    Motivated by the early-time dynamics of the quark-gluon plasma in high-energy heavy-ion collisions, we study spectral excitations of overoccupied gauge theories far from equilibrium using classical-statistical lattice simulations. In 3+1 dimensions we find that the spectral function exhibits quasiparticle excitations at all momenta that are mostly consistent with perturbative hard-thermal loop...

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  5. 202. Probes of the quark-gluon plasma and plasma instabilities
    Sigtryggur Hauksson (McGill University)
    4/16/21, 2:50 PM
    Oral Presentation

    Penetrating probes in heavy-ion collisions, like jets and photons, are sensitive to the transport coefficients of the produced quark-gluon plasma. Quantifying this sensitivity requires a detailed understanding of photon emission and jet-medium interaction in a non-equilibrium plasma during the hydrodynamic stages of heavy-ion collisions. Up to now, such an understanding has been hindered by...

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