Young Research Teams Project PN-III-P1-1.1-TE-2021-1707
2022 - 2024
Supported by CNCS - UEFISCDI, Contract number 118/2022 within PNCDI III
The present project aims to extend our understanding of the phenomenology of the quark-gluon plasma (QGP) formed in relativistic heavy ion collisions by addressing the following open questions:
- Validity of attractor solutions in non-symmetric flows (O1);
- impact of charge diffusion at finite chemical potential on flow observables (O2);
- polarisation in vortical fluids (O3).
O1 addresses the existence and robustness of attractor solutions, identified already in the context of the Bjorken model. In particular, we seek for attractors due solely to the transverse expansion (in the absence of longitudinal expansion). We then seek to quantify the effect of both longitudinal and transverse expansions in the harmonic flow coefficients vn for 2+1-D Bjorken flow with realistic initial transverse plane distributions.
During O2, we consider simple kinetic models with multiple particle species in order to model the diffusion of the various conserved charges characterising the QGP (Q, B and S). In order to investigate the properties of the chiral phase transition at finite chemical potential, we use a kinetic model for particles with dynamical mass and implement the non-ideal equation of state derived within the linear sigma model with quarks (LSMq).
During O3, we address the problem of polarisation in vortical fluids from the perspective of the novel helical vortical effects (HVE). In particular, we aim to formulate a thermodynamically consistent hydrodynamic theory taking into account the HVEs at the level of the constitutive equations for the charge currents. In the second part, motivated by the success of the conjunction between the chiral and helical vortical effects to explain the polarisation ratio of the anti-hyperons to hyperons, we seek to implement the HVE into a code simulating the 2+1-D Bjorken flow, in order to identify their role at the level of the transverse plane polarisation.