Bottomonium suppression in the quark-gluon plasma -- From effective field theories to non-unitary quantum evolution

TL;DR

This paper reviews recent theoretical work on bottomonium suppression in quark-gluon plasma using open quantum systems and effective field theories, providing predictions aligned with experimental data.

Contribution

It introduces a novel application of open quantum systems and the GKSL equation within pNRQCD to model bottomonium suppression in heavy-ion collisions.

Findings

Predictions match experimental suppression data from LHC experiments.

The approach captures non-equilibrium dynamics and decoherence effects.

Next-to-leading-order GKSL equations improve theoretical accuracy.

Abstract

In this proceedings contribution I review recent work which computes the suppression of bottomonium production in heavy-ion collisions using open quantum systems methods applied within the potential non-relativistic quantum chromodynamics (pNRQCD) effective field theory. I discuss how the computation of bottomonium suppression can be reduced to solving a Gorini-Kossakowski-Sudarshan-Lindblad (GKSL) quantum master equation for the evolution of the b-bbar reduced density matrix. The open quantum systems approach used allows one to take into account the non-equilibrium dynamics and decoherence of bottomonium in the quark-gluon plasma. Finally, I present comparisons of phenomenological predictions obtained using a recently obtained next-to-leading-order GKSL equation with ALICE, ATLAS, and CMS experimental data for bottomonium suppression and elliptic flow.