We use effective kinetic theory to simulate equilibration in heavy-ion collisions. We construct a map for out-of-equilibrium initial state to the energy-momentum tensor at a time when hydrodynamics becomes applicable. We apply this map to IPGlasma initial conditions and demonstrate a smooth transition to hydrodynamics. In a phenomenologically favorable range of $\eta/s$ values, equilibration can be well approximated by a fixed function of a scaled time variable $(\tau T)/(\eta/s)$. This scalable kinetic equilibration can be readily applied to other initial state models to provide perturbatively controlled description of pre-equilibrium energy and transverse momentum flow evolution.
JHEP 1608 (2016) 171 [hep-ph/1605.04287]
Phys.Rev.Lett. 115 (2015) 18 [hep-ph/1506.06647]
|Preferred Track||Initial State Physics and Approach to Equilibrium|