"数理论坛"第126期:Early thermalisation and shear viscosity to entropy ratioin heavy-ion collisions at energies of BES, FAIR and NICA.

报告题目

Early thermalisation   and shear viscosity to entropy ratioin heavy-ion collisions at energies of   BES, FAIR and NICA.

报告时间

2019.11.11日下午16点

报告地点

东区综合楼A座1104报告厅

报告人

Evgeny E. Zabrodin

报告人

简介

Evgeny E. Zabrodin研究员，挪威卑尔根大学物理系博士毕业，先后担任莫斯科国立大学核物理研究所研究员、挪威卑尔根大学物理系客座研究员、德国法兰克福大学理论物理研究所客座研究员、德国乌宾根大学理论物理研究所研究员、挪威奥斯陆大学应用数学中心研究员、德国法兰克福大学法兰克福高等研究院客座研究员，现任挪威奥斯陆大学物理系研究员。他长期从事高能核物理研究，是欧洲核物理中心ALICE国际实验组的重要成员，是多个国际重要物理期刊的审稿人，已发表论文146余篇，参加学术会议和讲座129余次，论文被引用达到9200次。

报告摘要

Equilibration of   highly excited baryon-rich matter is studied within themicroscopic model   calculations in A+A collisions at energies of BES, FAIRand NICA. It is shown   that the system evolution from the very beginningof the collision can be   approximated by relativistic hydrodynamics, althoughthe hot and dense nuclear   matter is not in local equilibrium yet.During the evolution of the fireball   the extracted values of energy density,net baryon and net strangeness   densities are used as input to StatisticalModel (SM) in order to calculate   temperature, chemical potentials and entropy density of the system.   Also, they are used as an input for the box with periodic boundary   conditions to investigate influence of initial cut-offtime on momentum   correlators in the infinite nuclear matter. Shear viscosityis calculated   according to the Green-Kubo formalism.At all energies, shear viscosity to   entropy density ratio shows minimumat time corresponding to maximum baryon   density. The ratio dependence onthe SM temperature, baryon chemical potential   and strangeness chemicalpotential is investigated.

邀请人

陈刚教授

2019年11月9日

学院

审核意见

年 月 日