Collective dynamics in relativistic nuclear collisions studied with ALICE at the LHC

Although ALICE is a detector designed to study the strongly interacting matter at extreme
temperatures and energy densities, where the quark-gluon plasma (QGP) is formed, it also allows
to perform unique measurements in proton-proton and proton-lead collisions. In this talk, we will
present a selected set of correlation measurements by ALICE, in both heavy-ion collisions and in
small collision systems. New results indicate that long-range correlations are present in p-p and
p-Pb collisions, which was not naively expected. Analysis of such collective behaviour in small and
large collision systems could shed some light on the formation and evolution of the QGP.