Bulk viscosity of quark matter across the QCD phase transitions

Chong-long Xie, Guo-yun Shao, Ming-zheng-xuan Wu +1

Based on the kinetic theory with relaxation time approximation, we investigate the bulk viscosity ($\hat{I}\P$) and its ratio to shear viscosity ($\hat{I}\P /\hat{I}\cdot$) of quark matter at finite temper…