Fig. 3
Transport lifetime at varied temperature and fixed interaction strength U/t = 2.3. A logarithmic scale is used to display the data. The lifetime τt is shown in units of the tunneling time (left axis) and in ms (right axis). The slope from a linear fit to the data (not shown) has a negative slope at greater than a 99.5% confidence level. The measurements are compared with a FGR weak-scattering calculation (black solid line) and a scaling prediction (red dashed line, which was fixed to match the FGR result at the highest temperature point) in the Maxwell-Boltzmann limit. For the FGR calculation, N is fixed to the average value from the data. The vertical error bars show the uncertainty in the fit used to determine τt, and the horizontal error bars display the uncertainty in T from time-of-flight thermometry
