Upsilon suppression in the Schr\"odinger-Langevin approach

We treat the question of bottomonia suppression in ultrarelativistic heavy ion collisions (URHIC) as a dynamical open quantum problem, tackled for the first time using the Schr"odinger-Langevin equation. Coupling this equation to the EPOS2 event generator, predictions are made for the nuclear modification factor of $\mathrm{{\rm Y}}(1S)$ and $\mathrm{{\rm Y}}(2S)$.