Conveners
Flow: Afternoon
- Jean-Yves Ollitrault (Institut de physique theorique, Saclay)
In hydrodynamical modeling of heavy-ion collisions, the equation of state (EoS) is usually taken to be lattice QCD EoS. However, the still often used parametrisation for lattice QCD EoS, s95p, is strictly speaking not compatible with the contemporary lattice QCD results. We have devised a new family of EoS parametrisations based on hotQCD and Budapest-Wuppertal data, and different lists of...
Symmetric cumulants, the novel flow observables which quantify the correlations between event-by-event fluctuations of two different flow harmonics, have been utilized extensively by the experimentalists in recent flow analyses in ultra-relativistic nuclear collisions, both at RHIC and LHC.
These observables provide the strong constraints for the details of QGP's temperature dependence of...
We show that far-from-equilibrium relativistic fluid dynamics may be systematically defined, for arbitrary flow profiles, in terms of a generalized tensorial expansion with transport coefficients that contain an all order resummation in gradients. In this formulation, the transport coefficients of far-from-equilibrium fluid dynamics depend not only on the microscopic properties of the system...
I present the state-of-the-art of anisotropic flow fluctuations in heavy-ion collisions. Event-by-event fluctuations of flow coefficients are investigated experimentally by means of multi-particle cumulants, which are indicators of the non-Gaussian behavior of the $v_n$ distributions. After a brief review of the theoretical basis underlying cumulants and the related observables, I use selected...
There is now a wealth of experimental data from RHIC and the LHC in small collision systems ranging from p+p, p+A, d+Au, 3He+Au that should help for constraining the underlying physics mechanisms at play. We detail a number of the key observables (https://arxiv.org/abs/1801.03477) and give a critical assessment of various theoretical interpretations. We attempt to provide a map forward in...
