QCD viscosity by combining the gradient flow and sparse modeling methods

26 Jul 2021, 22:30
15m
Oral presentation QCD at nonzero Temperature and Density QCD at nonzero Temperature and Density

Speaker

Etsuko Itou

Description

We give a new description to obtain the shear viscosity at finite temperature.
Firstly, we obtain the correlation function of the renormalized energy-momentum tensor using the gradient flow method.
Secondly, we estimate the spectral function from the smeared correlation functions
using the sparse modeling method.
The combination of these two methods looks promising to determine the shear viscosity precisely.

Primary authors

Etsuko Itou Yuki Nagai (JAEA and RIKEN AIP)

Presentation materials