Vorticity in low-energy heavy-ion collisions

Abstract

We study the kinematic and thermal vorticities in low-energy heavy-ion collisions by using the ultrarelativistic quantum molecular dynamics model. We explore their time evolution and spatial distribution. We find that the initial vorticities have a nonmonotonic dependence on the collision energy $\sqrt{{s}_{\mathrm{NN}}}$: as $\sqrt{{s}_{\mathrm{NN}}}$ grows the vorticities first increase steeply and then decrease with a turning point around $\sqrt{{s}_{\mathrm{NN}}}\ensuremath{\approx}3--5$ GeV depending on the centrality.

Topics & Concepts