# Regeneration of bottomonia in an open quantum systems approach

## TL;DR

This paper investigates how quantum jumps influence the nonequilibrium evolution of bottomonium in quark-gluon plasma, highlighting the necessity of quantum regeneration processes to match experimental suppression data.

## Contribution

It introduces an open quantum systems approach with quantum jumps to model bottomonium evolution, emphasizing regeneration effects and aligning with lattice QCD data.

## Key findings

- Quantum jumps significantly affect bottomonium evolution.
- Quantum regeneration is essential for accurate suppression modeling.
- Transport coefficients are consistent with lattice QCD results.

## Abstract

We demonstrate the importance of quantum jumps in the nonequilibrium evolution of bottomonium states in the quark-gluon plasma. Based on nonrelativistic effective field theory and the open quantum system framework, we evolve the density matrix of color singlet and octet pairs. We show that quantum regeneration of singlet states from octet configurations is necessary to understand experimental results for the suppression of both bottomonium ground and excited states. The values of the heavy-quarkonium transport coefficients used are consistent with recent lattice QCD determinations.