Bottomonium production in heavy-ion collisions using quantum trajectories: Differential observables and momentum anisotropy

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We report predictions for the suppression and elliptic flow of the $\Upsilon(1S)$, $\Upsilon(2S)$, and $\Upsilon(3S)$ as a function of centrality and transverse momentum in ultra-relativistic heavy-ion collisions.

• We obtain our predictions by numerically solving a Lindblad equation for the evolution of the heavy-quarkonium reduced density matrix derived using potential nonrelativistic QCD and the formalism of open quantum systems.
• To numerically solve the Lindblad equation, we make use of a stochastic unraveling called the quantum trajectories algorithm.
• This unraveling allows us to solve the Lindblad evolution equation efficiently on large lattices with no angular momentum cutoff.