Conveners
Tuesday morning
- Hannah Petersen
The ALICE experiment is designed and optimised to study the properties of the Quark-Gluon Plasma (QGP), a new state of matter, which is expected to be created at the high energy densities reached at the LHC. One of the key observables used to characterize the transport properties and the equation of state of the QGP is the azimuthal anisotropy in particle production, which is usually called...
Local momentum anisotropies become large in the early stages of the quark-gluon plasma created in relativistic heavy-ion collisions, due to the extreme difference in the longitudinal and transverse expansion rates. In such situations, fluid dynamics derived from an expansion around an isotropic local equilibrium state is bound to break down. Instead, we subsume the slowest nonhydrodynamic...
We use quasiparticle anisotropic hydrodynamics to study an azimuthally-symmetric boost- invariant quark-gluon plasma including the effects of both shear and bulk viscosities. In quasi- particle anisotropic hydrodynamics, a single finite-temperature quasiparticle mass is introduced and fit to the lattice data in order to implement a realistic equation of state. We compare results ob- tained...
The theoretical description of heavy ion collisions based on hydrodynamics allows to investigate the Equation of State (EoS) of strongly-interacting matter. This benefit comes with assumptions, such as rapid thermalization [2], negligible backflow to hydrodynamics (also known as negative Cooper-frye contributions), existence of a sharp freeze-out hypersurface and possibility to determine it...
The transition from a hydrodynamical modeling to a particle-based approach is a crucial element of the description of high-energy heavy-ion collisions. Assuming this "freeze out" happens instantaneously at each point of the expanding medium, we argue that the local phase-space distribution of the emitted particles is asymmetric in momentum space. This suggests the use of anisotropic...
