2011/07/26 by Ming-Min Wang, Yu Jiang, Bin Wang +2 · 1 citation
Physics and Astronomy · #hep-ph
paper · pdf · doi:10.1142/s0217732311036164
5 pages, 1 figure, 1 table
arxiv created 2011/07/26 · arxiv updated 2015/05/28
In this letter, based on Kubo's formula and the QCD low energy theorem, we propose a direct formula for calculating the bulk viscosity of QCD at finite chemical potential μ and zero temperature. According to this formula, the bulk viscosity at finite μ is totally determined by the dressed quark propagator at finite μ. We then use a dynamical, confining Dyson-Schwinger equation model of QCD to calculate the bulk viscosity at finite μ. It is found that no sharp peak behavior of the bulk viscosity at finite μ is observed, which is quite different from that of the bulk viscosity at finite temperature.