Speaker
Dr
Zhengyu Chen
(Tsinghua University)
Description
Huge orbital angular momenta and vorticity are produced in noncentral heavy-ion collisions, thus
the dynamics of quark-gluon plasma (QGP) must be influenced. Within the framework of parton
cascade Boltzmann Approach of MultiParton Scatterings (BAMPS), we calculate the elliptic flow
and spectra of QGP for Au + Au collisions at \sqrt{s_\mathrm{NN}} = 200 GeV. Vorticity is implemented according
to participant number asymmetry via Monte Carlo techniques. We find that vorticity can decrease
the expansion along x axis while almost has no influence on the expansion along y axis, as well
as enhance the yield of partons. Besides the initial geometrical eccentricity of the nuclear overlap
region which is usually considered as the origin of elliptic flow, our results show that vorticity have
significant effect which can lead to a decrease of v2 .
Primary author
Dr
Zhengyu Chen
(Tsinghua University)
Co-authors
Prof.
Carsten Greiner
(Johann Wolfgang Goethe-Universität Frankfurt)
ZHE XU
(Tsinghua University)
