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

Extending the fluid dynamic description of heavy-ions collisions to times before the collision

Not scheduled

20m

Copenhagen

Poster The initial stages and nuclear structure in heavy-ion collisions

Speaker

Andreas Bernd Kirchner (ITP Heidelberg)

Description

It is well established that the late states of a high energy nuclear colli-
sion can be described in terms of relativistic fluid dynamics. An open
problem in this context is how the actual collision and the early time
dynamics directly after it can be described. Phenomenological mod-
els are currently employed here and they have several parameters that
need to be fitted to experimental data. Using relativistic fluid dynam-
ics of second order we develop a new approach which addresses the
entire collision event, and which gets initialized in fact already before
the collision. This is based on the droplet model for the incoming
nuclei and a state-the-art equation of state including the first-order
liquid-gas phase transition. The physics picture we propose assumes
that the soft features of a high energy nuclear collision can be fully
described through the dynamics of the energy-momentum tensor and
other conserved currents.
This work is part of and supported by the DFG Collaborative Re-
search Centre ”SFB 1225 (ISOQUANT)”.