Drag force in a D-instanton background

作者：Zhang, Zi-qiang^*; Luo, Zhong-jie; Hou, De-fu^*

来源：Nuclear Physics A, 2018, 974: 1-8.

DOI：10.1016/j.nuclphysa.2018.03.004

• AdS/CFT
• QGP
• Drag force
• Diffusion coefficient

We study the drag force and diffusion coefficient with respect to a moving heavy quark in a D-instanton background, which corresponds to the Yang-Mills theory in the deconfining, high-temperature phase. It is shown that the presence of the D-instanton density tends to increase the drag force and decrease the diffusion coefficient, reverse to the effects of the velocity and the temperature. Moreover, the inclusion of the D-instanton density makes the medium less viscous.

• 出版日期2018-6
• 单位华中师范大学; 中国地质大学（北京）