Speaker
Nicolas Borghini
Description
We investigate the onset of anisotropic flow in various particle-based transport approaches, ranging from the quasi-collisionless case to the hydrodynamic regime. In the former case, general arguments applied to a phase-space distribution obeying the Boltzmann equation in the limit of few rescatterings lead to a power-law increase of $v_n$ as a function of time. We confirm this behavior in numerical transport calculations with a fixed initial profile, and further study how the exponent of the power law changes when the average number of rescatterings per particle increases, yielding a different result in the hydrodynamic limit. This shows that the early-time development of anisotropic flow is not universal across different theories.
Authors
Hendrik Roch
(Bielefeld University)
Marc Borrell Martinez
(University of Bielefeld)
Nicolas Borghini
