Polarization in heavy ion collisions: A theoretical review

In these proceedings I discuss the recent progress in theory of spin polarization relativistic fluids. To date, a number studies have begun to examine impact shear tensor on local and whether this contribution can restore agreement between measurements predictions obtained from induced by gradients plasma. present derivation vector fermion at thermal equilibrium role pseudo-gauge transformations dissipative effects. list what we learn measured lower energies. Finally, possible applications heavy ion collisions.