González Ferreiro, Elena2020-04-162020-04-162019G. Ferreiro, E. (2019). Quarkonium: a theory overview. Nuclear Physics A, 982, 127-133. doi: 10.1016/j.nuclphysa.2018.12.0020375-9474http://hdl.handle.net/10347/21483Quarkonium has long been proposed as one of the golden probes to identify the phase transition from confined hadronic matter to the deconfined quark-gluon plasma in heavy-ion collisions. Since then, we have achieved a better understanding, not only about the propagation of quarkonium in-medium, but also about its production. Recent theoretical developments in our comprehension of the quarkonium production mechanism in proton-proton collisions and on the propagation of quarkonia in proton-nucleus and nucleus-nucleus collisions are reviewed and discussedeng© 2018 Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)https://creativecommons.org/licenses/by-nc-nd/4.0/QCDHeavy-ion theoryPhenomenological modelsjournal article10.1016/j.nuclphysa.2018.12.0021873-1554open access