Seminar in Hadronic Physics

Exploring the QCD phase diagram - SMASH, gluonic hot spots and deep learning

Hannah Petersen

Frankfurt Institute for Advanced Studies

In the first part of the talk, I will introduce a newly developed hadronic transport approach, SMASH (Simulating Many Accelerated Strongly-interacting Hadrons). After explaining all the ingredients of this approach, e.g. initial conditions and resonance properties, the approach is validated by a comparison to an analytic solution of the Boltzmann equation. Light and strange particle production and collective flow are compared to experimental data from elementary and nucleus-nucleus collisions in the low energy regime accessible at GSI. The implications of this new approach for dilepton production will be discussed including an outlook on the non-equilibrium hadronic production of electromagnetic probes at high beam energies at RHIC and LHC.

In the second part of the talk, I will cover recent developments to include correlations between gluonic hot spots to model the sub-structure of the proton and their influence on the eccentricities and in small systems. Finally, I will also highlight how deep learning techniques can be applied to heavy ion physics to extract features, e.g. a first order phase transition in the QCD phase diagram.