The VII-th International Conference on the Initial Stages of High-Energy Nuclear Collisions : Initial Stages 2023

Dynamical attractors in a 3+1D full transport approach

Not scheduled

2h

Københavns Universitetsbibliotek Nord

Poster Collective dynamics from small to large systems Reception and poster session

Speaker

Vincenzo Nugara (University of Catania, LNS-INFN)

Description

we investigate the existence of far-from equilibrium attractors in momentum moments of the one particle distribution function by means a 3+1D Boltzmann transport approach at fixed η/s with the full collision integral. Attractors are found in the normalized moments of the distribution function and in the evolution of the distribution function itself. We show the results in systems with Bjorken symmetry, for which analytical relaxation-time approximation solutions are available, and we show some results also when Bjorken symmetry is broken. We compare our results for conformal and non-conformal case and for different values of η/s and m, in order to investigate the role of the equation of state in approaching the universal attractor. We then extend our study by employing a quasi-particle model of quarks and gluons with thermal masses tuned to reproduce lattice QCD thermodynamics.
[1] S. Plumari, G. Galesi, L. Oliva, V. Nugara, V. Greco, Acta Physica Polonica B 16, 1-A27 (2023)
[2] A.Gabbana, S.Plumari, G.Galesi, V.Greco, D.Simeoni, S.Succi and R. Tripiccione,Phys. Rev. C 101 (2020) no.6, 064904.
[3] S. Plumari Eur. Phys. J. C 79 (2019) no.1, 2