Hadronic Shear Viscosity: A Comparison between the Green-Kubo and Chapmann Enskog Methods

30th Winter Workshop on Nuclear Dynamics

Demir, Nasser^1 ; Wiranata, Anton^2,3,4

Physics Department, Faculty of Science, Kuwait University, Khaldiya

13060, Kuwait^1

Central China Normal University, IOPP, Wuhan

430079, China^2

Nuclear Science Division, Lawrence Berkeley National Laboratory, MS 70R0319, Berkeley

CA

94720, United States^3

Department of Physics and Astronomy, Ohio University, Athens

OH

45701, United States^4

关键词: Enskog method;    Green-Kubo;    Green-Kubo methods;    Massless particles;    Quantum molecular dynamics;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/535/1/012018/pdf
DOI  :  10.1088/1742-6596/535/1/012018

来源: IOP

【 摘 要 】

A detailed comparison between two methods to calculate shear viscosity is presented. We choose two systems in this comparison which are massless particles with current algebra cross section and a mixture comprised of pions with rho resonances. The two methods involved are the Green-Kubo method, applied using the Ultrarelativistic Quantum Molecular Dynamics (UrQMD) model to simulate the hadronic medium, and the Chapmann-Enskog method.