Time-evolution of fluctuations as signal of the phase transition dynamics in a QCD-assisted transport approach

Understand

For the understanding of fluctuation measurements in heavy-ion collisions it is crucial to develop quantitatively reliable dynamical descriptions which take the non-perturbative nature of QCD near the phase transition into account.

• We discuss a novel QCD-assisted transport approach based on non-equilibrium chiral fluid dynamics and the effective action of low energy QCD.
• In this framework, we study the time-evolution of fluctuation measures of the critical mode, notably the kurtosis, for a non-expanding system.
• From this, we can estimate the equilibration times of critical mode fluctuations in the QCD phase diagram.