Speaker
Description
One of the most common quantities discussed in connection with Quark-Gluon Plasma is vorticity: $\vec{w}=curl\,\vec{v}$, where $\vec{v}$ is velocity. However, as the coordinates are not observed in a real experiment, we will also investigate such observable: $\vec{w}_p=(p_yv_z-p_zv_y, p_zv_x-p_xv_z,p_xv_y-p_yv_x)$, which can be interpreted as handedness and to which we refer as pulse-vorticity, since $\vec{w}$ and $\vec{w_p}$ seem related trough the uncertainty principle. Modelling of the velocity space was done by creating a grid of set parameters and calculating for each cell: $\vec{v_i}=\frac{\sum \vec{p_i}}{\sum E_i}$, where $E_i$ and $\vec{p}_i$ are energy and momentum of each particle in given cell. Doing so would automatically arrange particles with respect to their energies. The Parton-Hadron-String Dynamics (PHSD) model was used for calculations. Some basic properties of the two quantities match.
