Title: Swirling QGP

Abstract: The strongly interacting system created in ultrarelativistic nuclear
collisions behaves almost as an ideal fluid with rich patterns of the
velocity field exhibiting strong vortical structure. Vorticity of the
fluid leads to particle polarization.  The experimental discovery of
the global polarization in heavy-ion collisions, particle spin
polarization along the system orbital momentum, followed by the
measurements of the polarization along the beam direction, are among
the most significant discoveries made in the heavy-ion collision
program along with observations of strong elliptic flow and jet
quenching. This discovery opened completely new perspectives for study of the
nuclear collision dynamics, properties of the quark-gluon plasma
(QGP), the spin and its transport in QGP medium. It generated intense
theoretical discussions as well as experimental activities. In my talk
I discuss several important measurements made in this field in recent years,
including the most recent results from the RHIC isobar run data analysis.