  This paper investigates the relationship between initial spatial anisotropy
and final state momentum anisotropy in heavy ion collisions through the
analysis of elliptic flow ($\nu_2$) as a function of transverse momentum
($p_T$). Building upon previous studies on thermalization in heavy ion
collisions using transverse momentum distributions, we extend the analysis to
the $p_T$ dependence of $\nu_2$ in Pb-Pb and Xe-Xe collisions. By employing a
two-component model to extract the thermal and hard scattering contributions to
the elliptic flow, we aim to gain further insights into the role of quantum
entanglement in the rapid thermalization and collective behavior of the
quark-gluon plasma (QGP).
