Initial vorticities of quark–gluon matter in heavy-ion collisions

Abstract

We calculate four types of initial vorticities in Au$$$+$$$Au collisions at energies $\sqrt{S_{\mathrm{\text{NN}}}}=5$–200$$GeV using a microscopic transport model PACIAE. Our simulation shows the nonmonotonic dependence of the initial vorticities on the collision energies. The energy turning point is around 10–15$$GeV for different vorticities but not sensitive to impact parameter.