content_image/369601.jpg content_image/369606.jpg content_image/369607.jpg
<img src='content_image/369601.jpg'>

The above expression is easily evaluated numerically using the expressions of the last section. The result is displayed for small values of µ/T in Figure 9. In this regime, η/s is well above the conjectured bound, and comparable to the 3 d values extracted from the experimental data[31]. We find 

<img src='content_image/369606.jpg'>

This is well-below the values for common substances like water, however it is compa- rable to values for liquid helium, which is about 9 times the bound[24]. In the region shown: 

<img src='content_image/369607.jpg'>

In Figure 10 we plot η/s as a function of T/T$_{F}$ , and one observes a behavior quite similar both qualitatively and quantitatively to the 3d data summarized in[31], where the minimal value is about 6 times the bound. 

